path: root/doc/commands.doc

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/*! \page commands Special Commands

\section cmd_intro Introduction

All commands in the documentation start with a backslash (<b>\\</b>) or an
at-sign (<b>\@</b>). If you prefer you can replace all commands starting with a
backslash below by their counterparts that start with an at-sign.

Some commands have one or more arguments.
Each argument has a certain range:
<ul>
<li>If \<sharp\> braces are used the argument is a single word.
<li>If (round) braces are used the argument extends until the end of the line
    on which the command was found.
<li>If {curly} braces are used the argument extends until the next paragraph.
    Paragraphs are delimited by a blank line or by a section indicator. Note that
    {curly} braces are also used for command options, here the braces are mandatory
    and  just 'normal' characters. The starting curly brace has to directly follow
    the command, so without whitespace.
</ul>
If in addition to the above argument specifiers [square] brackets are used the argument
is optional, unless they are placed between quotes in that case they are a mandatory
part of the command argument.

Here is an alphabetically sorted list of all commands with references to their
documentation:
\anchor showsecreflist
\secreflist
\refitem cmda \\a
\refitem cmdaddindex \\addindex
\refitem cmdaddtogroup \\addtogroup
\refitem cmdanchor \\anchor
\refitem cmdarg \\arg
\refitem cmdattention \\attention
\refitem cmdauthor \\author
\refitem cmdauthors \\authors
\refitem cmdb \\b
\refitem cmdbrief \\brief
\refitem cmdbug \\bug
\refitem cmdc \\c
\refitem cmdcallergraph \\callergraph
\refitem cmdcallgraph \\callgraph
\refitem cmdcategory \\category
\refitem cmdcite \\cite
\refitem cmdclass \\class
\refitem cmdcode \\code
\refitem cmdconcept \\concept
\refitem cmdcond \\cond
\refitem cmdcopybrief \\copybrief
\refitem cmdcopydetails \\copydetails
\refitem cmdcopydoc \\copydoc
\refitem cmdcopyright \\copyright
\refitem cmddate \\date
\refitem cmddef \\def
\refitem cmddefgroup \\defgroup
\refitem cmddeprecated \\deprecated
\refitem cmddetails \\details
\refitem cmddiafile \\diafile
\refitem cmddir \\dir
\refitem cmddocbookinclude \\docbookinclude
\refitem cmddocbookonly \\docbookonly
\refitem cmddontinclude \\dontinclude
\refitem cmddot \\dot
\refitem cmddotfile \\dotfile
\refitem cmde \\e
\refitem cmdelse \\else
\refitem cmdelseif \\elseif
\refitem cmdem \\em
\refitem cmdemoji \\emoji
\refitem cmdendcode \\endcode
\refitem cmdendcond \\endcond
\refitem cmdenddocbookonly \\enddocbookonly
\refitem cmdenddot \\enddot
\refitem cmdendhtmlonly \\endhtmlonly
\refitem cmdendif \\endif
\refitem cmdendinternal \\endinternal
\refitem cmdendlatexonly \\endlatexonly
\refitem cmdendlink \\endlink
\refitem cmdendmanonly \\endmanonly
\refitem cmdendmsc \\endmsc
\refitem cmdendparblock \\endparblock
\refitem cmdendrtfonly \\endrtfonly
\refitem cmdendsecreflist \\endsecreflist
\refitem cmdendverbatim \\endverbatim
\refitem cmdenduml \\enduml
\refitem cmdendxmlonly \\endxmlonly
\refitem cmdenum \\enum
\refitem cmdexample \\example
\refitem cmdexception \\exception
\refitem cmdextends \\extends
\refitem cmdfrndopen \\f(
\refitem cmdfrndclose \\f)
\refitem cmdfdollar \\f\$
\refitem cmdfbropen \\f[
\refitem cmdfbrclose \\f]
\refitem cmdfcurlyopen \\f{
\refitem cmdfcurlyclose \\f}
\refitem cmdfile \\file
\refitem cmdfn \\fn
\refitem cmdheaderfile \\headerfile
\refitem cmdhidecallergraph \\hidecallergraph
\refitem cmdhidecallgraph \\hidecallgraph
\refitem cmdhiderefby \\hiderefby
\refitem cmdhiderefs \\hiderefs
\refitem cmdhideinitializer \\hideinitializer
\refitem cmdhtmlinclude \\htmlinclude
\refitem cmdhtmlonly \\htmlonly
\refitem cmdidlexcept \\idlexcept
\refitem cmdif \\if
\refitem cmdifnot \\ifnot
\refitem cmdimage \\image
\refitem cmdimplements \\implements
\refitem cmdinclude \\include
\refitem cmdincludedoc \\includedoc
\refitem cmdincludelineno \\includelineno
\refitem cmdingroup \\ingroup
\refitem cmdinternal \\internal
\refitem cmdinvariant \\invariant
\refitem cmdinterface \\interface
\refitem cmdlatexinclude \\latexinclude
\refitem cmdlatexonly \\latexonly
\refitem cmdli \\li
\refitem cmdline \\line
\refitem cmdlink \\link
\refitem cmdmainpage \\mainpage
\refitem cmdmaninclude \\maninclude
\refitem cmdmanonly \\manonly
\refitem cmdmemberof \\memberof
\refitem cmdmsc \\msc
\refitem cmdmscfile \\mscfile
\refitem cmdn \\n
\refitem cmdname \\name
\refitem cmdnamespace \\namespace
\refitem cmdnoop \\noop
\refitem cmdnosubgrouping \\nosubgrouping
\refitem cmdnote \\note
\refitem cmdoverload \\overload
\refitem cmdp \\p
\refitem cmdpackage \\package
\refitem cmdpage \\page
\refitem cmdpar \\par
\refitem cmdparagraph \\paragraph
\refitem cmdparam \\param
\refitem cmdparblock \\parblock
\refitem cmdpost \\post
\refitem cmdpre \\pre
\refitem cmdprivate \\private
\refitem cmdprivatesection \\privatesection
\refitem cmdproperty \\property
\refitem cmdprotected \\protected
\refitem cmdprotectedsection \\protectedsection
\refitem cmdprotocol \\protocol
\refitem cmdpublic \\public
\refitem cmdpublicsection \\publicsection
\refitem cmdpure \\pure
\refitem cmdref \\ref
\refitem cmdrefitem \\refitem
\refitem cmdrelated \\related
\refitem cmdrelates \\relates
\refitem cmdrelatedalso \\relatedalso
\refitem cmdrelatesalso \\relatesalso
\refitem cmdremark \\remark
\refitem cmdremarks \\remarks
\refitem cmdresult \\result
\refitem cmdreturn \\return
\refitem cmdreturns \\returns
\refitem cmdretval \\retval
\refitem cmdrtfinclude \\rtfinclude
\refitem cmdrtfonly \\rtfonly
\refitem cmdsa \\sa
\refitem cmdsecreflist \\secreflist
\refitem cmdsection \\section
\refitem cmdsee \\see
\refitem cmdshort \\short
\refitem cmdshowinitializer \\showinitializer
\refitem cmdshowrefby \\showrefby
\refitem cmdshowrefs \\showrefs
\refitem cmdsince \\since
\refitem cmdskip \\skip
\refitem cmdskipline \\skipline
\refitem cmdsnippet \\snippet
\refitem cmdsnippetdoc \\snippetdoc
\refitem cmdsnippetlineno \\snippetlineno
\refitem cmdstatic \\static
\refitem cmdstartuml \\startuml
\refitem cmdstruct \\struct
\refitem cmdsubpage \\subpage
\refitem cmdsubsection \\subsection
\refitem cmdsubsubsection \\subsubsection
\refitem cmdtableofcontents \\tableofcontents
\refitem cmdtest \\test
\refitem cmdthrow \\throw
\refitem cmdthrows \\throws
\refitem cmdtodo \\todo
\refitem cmdtparam \\tparam
\refitem cmdtypedef \\typedef
\refitem cmdunion \\union
\refitem cmduntil \\until
\refitem cmdvar \\var
\refitem cmdverbatim \\verbatim
\refitem cmdverbinclude \\verbinclude
\refitem cmdversion \\version
\refitem cmdvhdlflow \\vhdlflow
\refitem cmdwarning \\warning
\refitem cmdweakgroup \\weakgroup
\refitem cmdxmlinclude \\xmlinclude
\refitem cmdxmlonly \\xmlonly
\refitem cmdxrefitem \\xrefitem
\refitem cmddollar \\\$
\refitem cmdat \\\@
\refitem cmdbackslash \\\\
\refitem cmdamp \\\&
\refitem cmdtilde \\~
\refitem cmdlt \\\<
\refitem cmdeq \\=
\refitem cmdgt \\\>
\refitem cmdhash \\\#
\refitem cmdperc \\\%
\refitem cmdquot \\\"
\refitem cmdchardot \\\.
\refitem cmddcolon \::
\refitem cmdpipe \\|
\refitem cmdndash \\\--
\refitem cmdmdash \\\---
\endsecreflist

The following subsections provide a list of all commands that are recognized by
doxygen. Unrecognized commands are treated as normal text.


\htmlonly</p><center><p>\endhtmlonly
<h2>
\htmlonly --- \endhtmlonly
Structural indicators
\htmlonly --- \endhtmlonly
</h2>
\htmlonly</p></center><p>\endhtmlonly

\section cmdaddtogroup \\addtogroup <name> [(title)]
  \addindex \\addtogroup
  Defines a group just like \ref cmddefgroup "\\defgroup", but in contrast to
  that command using the same \<name\> more than once will not result in a warning,
  but rather one group with a merged documentation and the first title found in
  any of the commands.

  The title is optional, so this command can also be used to add a number of
  entities to an existing group using \c \@{ and \c \@} like this:

\verbatim
  /*! \addtogroup mygrp
   *  Additional documentation for group 'mygrp'
   *  @{
   */

  /*!
   *  A function
   */
  void func1()
  {
  }

  /*! Another function */
  void func2()
  {
  }

  /*! @} */
\endverbatim

  \sa page \ref grouping "Grouping", sections \ref cmddefgroup "\\defgroup", \ref cmdingroup "\\ingroup", and
  \ref cmdweakgroup "\\weakgroup".

<hr>
\section cmdcallgraph \\callgraph

  \addindex \\callgraph
  When this command is put in a comment block of a function or method
  and \ref cfg_have_dot "HAVE_DOT" is set to \c YES, then doxygen will
  generate a call graph for that function (provided the implementation of the
  function or method calls other documented functions). The call graph will be
  generated regardless of the value of \ref cfg_call_graph "CALL_GRAPH".
  \note The completeness (and correctness) of the call graph depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdcallergraph "\\callergraph",
      section \ref cmdhidecallgraph "\\hidecallgraph",
      section \ref cmdhidecallergraph "\\hidecallergraph" and
      option \ref cfg_call_graph "CALL_GRAPH"

<hr>
\section cmdhidecallgraph \\hidecallgraph

  \addindex \\hidecallgraph
  When this command is put in a comment block of a function or method
  and then doxygen will not generate a call graph for that function. The
  call graph will not be generated regardless of the value of
  \ref cfg_call_graph "CALL_GRAPH".
  \note The completeness (and correctness) of the call graph depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdcallergraph "\\callergraph",
      section \ref cmdcallgraph "\\callgraph",
      section \ref cmdhidecallergraph "\\hidecallergraph" and
      option \ref cfg_call_graph "CALL_GRAPH"

<hr>
\section cmdcallergraph \\callergraph

  \addindex \\callergraph
  When this command is put in a comment block of a function or method
  and \ref cfg_have_dot "HAVE_DOT" is set to \c YES, then doxygen will
  generate a caller graph for that function (provided the implementation of the
  function or method is called by other documented functions). The caller graph will be
  generated regardless of the value of \ref cfg_caller_graph "CALLER_GRAPH".
  \note The completeness (and correctness) of the caller graph depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdcallgraph "\\callgraph",
      section \ref cmdhidecallgraph "\\hidecallgraph",
      section \ref cmdhidecallergraph "\\hidecallergraph" and
      option \ref cfg_caller_graph "CALLER_GRAPH"

<hr>
\section cmdhidecallergraph \\hidecallergraph

  \addindex \\hidecallergraph
  When this command is put in a comment block of a function or method
  and then doxygen will not generate a caller graph for that function. The
  caller graph will not be generated regardless of the value of
  \ref cfg_caller_graph "CALLER_GRAPH".
  \note The completeness (and correctness) of the caller graph depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdcallergraph "\\callergraph",
      section \ref cmdcallgraph "\\callgraph",
      section \ref cmdhidecallgraph "\\hidecallgraph" and
      option \ref cfg_caller_graph "CALLER_GRAPH"

<hr>
\section cmdshowrefby \\showrefby

  \addindex \\showrefby
  When this command is put in a comment block of a function, method or variable,
  then doxygen will generate an overview for that function, method, variable of
  the, documented, functions and methods that call / use it.
  The overview will be generated regardless of the value of
  \ref cfg_referenced_by_relation "REFERENCED_BY_RELATION".
  \note The completeness (and correctness) of the overview depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdshowrefs "\\showrefs",
      section \ref cmdhiderefby "\\hiderefby",
      section \ref cmdhiderefs "\\hiderefs" and
      option \ref cfg_referenced_by_relation "REFERENCED_BY_RELATION"

<hr>
\section cmdhiderefby \\hiderefby

  \addindex \\hiderefby
  When this command is put in a comment block of a function, method or variable
  then doxygen will not generate an overview for that function, method or
  variable of the functions and methods that call / use it.
  The overview will not be generated regardless of the value of
  \ref cfg_referenced_by_relation "REFERENCED_BY_RELATION".
  \note The completeness (and correctness) of the overview depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdshowrefs "\\showrefs",
      section \ref cmdshowrefby "\\showrefby",
      section \ref cmdhiderefs "\\hiderefs" and
      option \ref cfg_referenced_by_relation "REFERENCED_BY_RELATION"

<hr>
\section cmdshowrefs \\showrefs

  \addindex \\showrefs
  When this command is put in a comment block of a function or method,
  then doxygen will generate an overview for that function or method of the
  functions and methods that call it.
  The overview will be generated regardless of the value of
  \ref cfg_references_relation "REFERENCES_RELATION".
  \note The completeness (and correctness) of the overview depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdshowrefby "\\showrefby",
      section \ref cmdhiderefby "\\hiderefby",
      section \ref cmdhiderefs "\\hiderefs" and
      option \ref cfg_references_relation "REFERENCES_RELATION"

<hr>
\section cmdhiderefs \\hiderefs

  \addindex \\hiderefs
  When this command is put in a comment block of a function or method
  and then doxygen will not generate an overview for that function or method of
  the functions and methods that call it.
  The overview will not be generated regardless of the value of
  \ref cfg_references_relation "REFERENCES_RELATION".
  \note The completeness (and correctness) of the overview depends on the
  doxygen code parser which is not perfect.

  \sa section \ref cmdshowrefs "\\showrefs",
      section \ref cmdshowrefby "\\showrefby",
      section \ref cmdhiderefby "\\hiderefby" and
      option \ref cfg_references_relation "REFERENCES_RELATION"

<hr>
\section cmdcategory \\category <name> [<header-file>] [<header-name>]

  \addindex \\category
  For Objective-C only: Indicates that a comment block contains documentation
  for a class category with name \<name\>. The arguments are
  equal to the \ref cmdclass "\\class" command.

  \sa section \ref cmdclass "\\class".

<hr>
\section cmdclass \\class <name> [<header-file>] [<header-name>]

  \addindex \\class
  Indicates that a comment block contains documentation for a
  class with name \<name\>. Optionally a header file and a header name
  can be specified. If the header-file is specified, a link to a verbatim copy
  of the header will be included in the HTML documentation.
  The \<header-name\> argument can be used to overwrite the
  name of the link that is used in the class documentation to something other
  than \<header-file\>. This can be useful if the include name is not located
  on the default include path (like \<X11/X.h\>). With the \<header-name\>
  argument you can also specify how the include statement should look like,
  by adding either quotes or sharp brackets around the name.
  Sharp brackets are used if just the name is given. Note that the
  last two arguments can also be specified using
  the \ref cmdheaderfile "\\headerfile" command.

  \par Example:
  \include class.h
  \htmlonly
  Click <a href="examples/class/html/index.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_example}{Class example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmdconcept \\concept <name>

  \addindex \\concept
  Indicates that a comment block contains documentation for a
  C++20 concept with name \<name\>.
  See also the \ref cmdheaderfile "\\headerfile" command to specify the
  header a user should be included to use the concept.

<hr>
\section cmddef \\def <name>

  \addindex \\def
  Indicates that a comment block contains documentation for a
  \c \#define macro.

  \par Example:
  \include define.h
  \htmlonly
  Click <a href="examples/define/html/define_8h.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{define_8h}{Define example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmddefgroup \\defgroup <name> (group title)

  \addindex \\defgroup
  Indicates that a comment block contains documentation for a
  \ref modules "group" of classes, files or namespaces. This can be used to
  categorize classes, files or namespaces, and document those
  categories. You can also use groups as members of other groups,
  thus building a hierarchy of groups.

  The \<name\> argument should be a single-word identifier.

  \sa page \ref grouping "Grouping", sections \ref cmdingroup "\\ingroup", \ref cmdaddtogroup "\\addtogroup", and
  \ref cmdweakgroup "\\weakgroup".

<hr>
\section cmddir \\dir [<path fragment>]

  \addindex \\dir
  Indicates that a comment block contains documentation for a directory.
  The "path fragment" argument should include the directory name and
  enough of the path to be unique with respect to the other directories
  in the project.
  The \ref cfg_strip_from_path "STRIP_FROM_PATH" option determines what is
  stripped from the full path before it appears in the output.

<hr>
\section cmdenum \\enum <name>

  \addindex \\enum
  Indicates that a comment block contains documentation for an
  enumeration, with name \<name\>. If the enum is a member of a class and
  the documentation block is located outside the class definition,
  the scope of the class should be specified as well.
  If a comment block is located directly in front of an enum declaration,
  the \c \\enum comment may be omitted.

  \par Note:
  The type of an anonymous enum cannot be documented, but the values
  of an anonymous enum can.

  \par Example:
  \include enum.h
  \htmlonly
  Click <a href="examples/enum/html/class_enum___test.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_enum___test}{Enum example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmdexample \\example['{lineno}'] <file-name>

  \addindex \\example
  Indicates that a comment block contains documentation for a source code
  example. The name of the source file is \<file-name\>.
  The contents of this file will be included in the documentation, just after the
  documentation contained in the comment block.
  You can add option `{lineno}` to enable line numbers for the example if desired.
  All examples are placed in a list. The source code is scanned for documented members and classes.
  If any are found, the names are cross-referenced with the documentation.
  Source files or directories can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH"
  tag of doxygen's configuration file.

  If \<file-name\> itself is not unique for the set of example files specified
  by the
  \ref cfg_example_path "EXAMPLE_PATH" tag, you can include part of the absolute path
  to disambiguate it.

  If more than one source file is needed for the example,
  the \ref cmdinclude "\\include" command can be used.

  \par Example:
  \include example.cpp
  Where the example file \c example_test.cpp looks as follows:
  \include example_test.cpp
  \htmlonly
  Click <a href="examples/example/html/examples.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{example_test_8cpp-example}{Example example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \sa section \ref cmdinclude "\\include".

<hr>
\section cmdendinternal \\endinternal

  \addindex \\endinternal
  This command ends a documentation fragment that was started with a
  \ref cmdinternal "\\internal" command. The text between \ref cmdinternal "\\internal" and
  \c \\endinternal will only be visible
  if \ref cfg_internal_docs "INTERNAL_DOCS" is set to \c YES.

<hr>
\section cmdextends \\extends <name>

  \addindex \\extends
  This command can be used to manually indicate an inheritance relation,
  when the programming language does not support this concept natively
  (e.g. C).

  The file \c manual.c in the example directory shows how to use this command.

  \htmlonly
  Click <a href="examples/manual/html/index.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{extends_example}{Extends example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \sa section \ref cmdimplements "\\implements" and section
      \ref cmdmemberof "\\memberof"

<hr>
\section cmdfile \\file [<name>]

  \addindex \\file
  Indicates that a comment block contains documentation for a source or
  header file with name \<name\>. The file name may include (part of) the
  path if the file-name alone is not unique. If the file name is omitted
  (i.e. the line after \c \\file is left blank) then the documentation block that
  contains the \c \\file command will belong to the file it is located in.

  \par Important:
  The documentation of global functions, variables, typedefs, and enums will
  only be included in the output if the file they are in is documented as well
  or if \ref cfg_extract_all "EXTRACT_ALL" is set to \c YES.

  \par Example:
  \include file.h
  \htmlonly
  Click <a href="examples/file/html/file_8h.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{file_example}{File example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \note In the above example \ref cfg_javadoc_autobrief "JAVADOC_AUTOBRIEF"
  has been set to \c YES in the configuration file.

<hr>
\section cmdfn \\fn (function declaration)

  \addindex \\fn
  Indicates that a comment block contains documentation for a function
  (either global or as a member of a class). This command is \em only
  needed if a comment block is \e not placed in front (or behind)
  the function declaration or definition.

  If your comment block \e is in front of the function
  declaration or definition this command can (and to avoid redundancy
  should) be omitted.

  A full function declaration including arguments should be specified after the
  \c \\fn command on a \e single line, since the argument ends at the end
  of the line!

  This command is equivalent to \ref cmdvar "\\var", \ref cmdtypedef "\\typedef",
  and \ref cmdproperty "\\property".

  \warning Do not use this command
  if it is not absolutely needed, since it will lead to duplication of
  information and thus to errors.

  \par Example:
  \include func.h
  \htmlonly
  Click <a href="examples/func/html/class_fn___test.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_fn___test}{Fn example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \sa sections \ref cmdvar "\\var", \ref cmdproperty "\\property", and
               \ref cmdtypedef "\\typedef".

<hr>
\section cmdheaderfile \\headerfile <header-file> [<header-name>]

  \addindex \\headerfile
  Intended to be used for class, struct, or union documentation, where
  the documentation is in front of the definition. The arguments of
  this command are the same as the second and third argument of
  \ref cmdclass "\\class".
  The \<header-file\> name refers to the file that should be included by the
  application to obtain the definition of the class, struct, or union.
  The \<header-name\> argument can be used to overwrite the
  name of the link that is used in the class documentation to something other
  than \<header-file\>. This can be useful if the include name is not located
  on the default include path (like \<X11/X.h\>).

  With the \<header-name\>
  argument you can also specify how the include statement should look like,
  by adding either double quotes or sharp brackets around the name.
  By default sharp brackets are used if just the name is given.

  If a pair of double quotes is given for either the \<header-file\> or
  \<header-name\> argument, the current file (in which the command was found)
  will be used but with quotes. So for a comment block with a \c \\headerfile
  command inside a file <code>test.h</code>, the following three commands are equivalent:
  \verbatim
  \headerfile test.h "test.h"
  \headerfile test.h ""
  \headerfile "" \endverbatim
  To get sharp brackets you do not need to specify anything,
  but if you want to be explicit you could use any of the following:
  \verbatim
  \headerfile test.h <test.h>
  \headerfile test.h <>
  \headerfile <> \endverbatim

  To globally reverse the default include representation to
  local includes you can set
  \ref cfg_force_local_includes "FORCE_LOCAL_INCLUDES" to \c YES.

  To disable the include information altogether set
  \ref cfg_show_include_files "SHOW_INCLUDE_FILES" to \c NO.

<hr>
\section cmdhideinitializer \\hideinitializer

  \addindex \\hideinitializer
  By default the value of a define and the initializer of a variable
  are displayed unless they are longer than 30 lines. By putting
  this command in a comment block of a define or variable, the
  initializer is always hidden. The maximum number of initialization lines
  can be changed by means of the configuration parameter
  \ref cfg_max_initializer_lines "MAX_INITIALIZER_LINES", the default
  value is 30.

  \sa section \ref cmdshowinitializer "\\showinitializer".

<hr>
\section cmdidlexcept \\idlexcept <name>
  \addindex \\idlexcept

  Indicates that a comment block contains documentation for a
  IDL exception with name \<name\>.

<hr>
\section cmdimplements \\implements <name>

  \addindex \\implements
  This command can be used to manually indicate an inheritance relation,
  when the programming language does not support this concept natively
  (e.g. C).

  The file \c manual.c in the example directory shows how to use this command.

  \htmlonly
  Click <a href="examples/manual/html/index.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{extends_example}{Implements example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \sa section \ref cmdextends "\\extends" and section
      \ref cmdmemberof "\\memberof"

<hr>
\section cmdingroup \\ingroup (<groupname> [<groupname> <groupname>])

  \addindex \\ingroup
  If the \c \\ingroup command is placed in a comment block of a
  class, file or namespace, then it will be added to the group or
  groups identified by \<groupname\>.

  \sa page \ref grouping "Grouping", sections \ref cmddefgroup "\\defgroup",
  \ref cmdaddtogroup "\\addtogroup", and \ref cmdweakgroup "\\weakgroup"

<hr>
\section cmdinterface \\interface <name> [<header-file>] [<header-name>]

  \addindex \\interface
  Indicates that a comment block contains documentation for an
  interface with name \<name\>. The arguments are equal to the arguments of the
  \ref cmdclass "\\class" command.

  \sa section \ref cmdclass "\\class".

<hr>
\section cmdinternal \\internal

  \addindex \\internal
  This command starts a documentation fragment that is meant for internal
  use only. The fragment naturally ends at the end of the comment block.
  You can also force the internal section to end earlier by using the
  \ref cmdendinternal "\\endinternal" command.

  If the \c \\internal command is put inside a section
  (see for example \ref cmdsection "\\section") all subsections after the
  command are considered to be internal as well. Only a new section at the
  same level will end the fragment that is considered internal.

  You can use \ref cfg_internal_docs "INTERNAL_DOCS" in the configuration file
  to show (\c YES) or hide (\c NO) the internal documentation.

  \sa section \ref cmdendinternal "\\endinternal".


<hr>
\section cmdmainpage \\mainpage [(title)]

  \addindex \\mainpage

  If the \c \\mainpage command is placed in a comment block the
  block is used to customize the index page (in HTML) or
  the first chapter (in \LaTeX).

  The title argument is optional and replaces the default title that
  doxygen normally generates. If you do not want any title you can
  specify \c notitle as the argument of \c \\mainpage.

  Here is an example:
\verbatim
/*! \mainpage My Personal Index Page
 *
 * \section intro_sec Introduction
 *
 * This is the introduction.
 *
 * \section install_sec Installation
 *
 * \subsection step1 Step 1: Opening the box
 *
 * etc...
 */
\endverbatim

 You can refer to the main page using: <code>\ref cmdref "\\ref" index</code>.

 \sa section \ref cmdsection "\\section",
     section \ref cmdsubsection "\\subsection", and
     section \ref cmdpage "\\page".

<hr>
\section cmdmemberof \\memberof <name>

  \addindex \\memberof
  This command makes a function a member of a class in a similar way
  as \ref cmdrelates "\\relates" does, only with this command the function
  is represented as a real member of the class.
  This can be useful when the programming language does not support
  the concept of member functions natively (e.g. C).

  It is also possible to use this command together with
  \ref cmdpublic "\\public", \ref cmdprotected "\\protected" or
  \ref cmdprivate "\\private".

  The file \c manual.c in the example directory shows how to use this command.

  \htmlonly
  Click <a href="examples/manual/html/index.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly

  \sa sections \ref cmdextends "\\extends", \ref cmdimplements "\\implements",
      \ref cmdpublic "\\public", \ref cmdprotected "\\protected" and
      \ref cmdprivate "\\private".

<hr>
\section cmdname \\name [(header)]

  \addindex \\name

  This command turns a comment block into a header
  definition of a member group. The
  comment block should be followed by a
  <code>///\@{ ... ///\@}</code> block containing the
  members of the group.

  See section \ref memgroup for an example.

<hr>
\section cmdnamespace \\namespace <name>

  \addindex \\namespace
  Indicates that a comment block contains documentation for a
  namespace with name \<name\>.

<hr>
\section cmdnosubgrouping \\nosubgrouping

  \addindex \\nosubgrouping
  This command can be put in the documentation
  of a class. It can be used in combination with member grouping
  to avoid that doxygen puts a member group as a subgroup of a
  Public/Protected/Private/... section.

  \sa sections \ref cmdpublicsection "\\publicsection",
      \ref cmdprotectedsection "\\protectedsection" and
      \ref cmdprivatesection "\\privatesection".

<hr>
\section cmdoverload \\overload [(function declaration)]

  \addindex \\overload
  This command can be used to generate the following
  standard text for an overloaded member function:

  > This is an overloaded member function, provided for convenience.
  > It differs from the above function only in what argument(s) it accepts.

  If the documentation for the overloaded member function is not located
  in front of the function declaration or definition, the optional
  argument should be used to specify the correct function.

  Any other documentation that is inside the documentation block will
  by appended after the generated message.

  \par Note 1:
    You are responsible that there is indeed an
    earlier documented member that is overloaded by this one.
    To prevent that document reorders the documentation you should set
    \ref cfg_sort_member_docs "SORT_MEMBER_DOCS" to \c NO in this case.
  \par Note 2:
    The \c \\overload command does not work inside a one-line comment.
  \par Example:
  \include overload.cpp
  \htmlonly
  Click <a href="examples/overload/html/class_overload___test.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_overload___test}{Overload example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmdpackage \\package <name>

  \addindex \\package
  Indicates that a comment block contains documentation for a
  Java package with name \<name\>.

<hr>
\section cmdpage \\page <name> (title)

  \addindex \\page
  Indicates that a comment block contains a piece of documentation that is
  not directly related to one specific class, file or member.
  The HTML generator creates a page containing the documentation. The
  \LaTeX generator
  starts a new section in the chapter 'Page documentation'.

  \par Example:
  \include page.doc
  \htmlonly
  Click <a href="examples/page/html/pages.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{page_example}{Page example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \par Note:
     The \<name\> argument consists of a combination of letters and number
     digits. If you wish to use upper case letters (e.g. \c MYPAGE1), or
     mixed case letters (e.g. \c MyPage1) in the \<name\> argument, you
     should set \ref cfg_case_sense_names "CASE_SENSE_NAMES" to \c YES. However, this is advisable
     only if your file system is case sensitive. Otherwise (and for better
     portability) you should use all lower case letters (e.g. \c mypage1)
     for \<name\> in all references to the page.

  \sa section \ref cmdsection "\\section", section
              \ref cmdsubsection "\\subsection", and section
              \ref cmdref "\\ref".

<hr>
\section cmdprivate \\private

  \addindex \\private
  Indicates that the member documented by the comment block is private,
  i.e., should only be accessed by other members in the same class.

  Note that doxygen automatically detects the protection level of members
  in object-oriented languages. This command is intended for use only when
  the language does not support the concept of protection level natively
  (e.g. C, PHP 4).

  For starting a section of private members, in a way similar to the
  "private:" class marker in C++, use \ref cmdprivatesection "\\privatesection".

  \sa sections \ref cmdmemberof "\\memberof", \ref cmdpublic "\\public",
      \ref cmdprotected "\\protected" and \ref cmdprivatesection "\\privatesection".

<hr>
\section cmdprivatesection \\privatesection

  \addindex \\privatesection
  Starting a section of private members, in a way similar to the
  "private:" class marker in C++.
  Indicates that the member documented by the comment block is private,
  i.e., should only be accessed by other members in the same class.

  \sa sections \ref cmdmemberof "\\memberof", \ref cmdpublic "\\public",
      \ref cmdprotected "\\protected" and \ref cmdprivate "\\private".

<hr>
\section cmdproperty \\property (qualified property name)

  \addindex \\property
  Indicates that a comment block contains documentation for a
  property (either global or as a member of a class).
  This command is equivalent to \ref cmdfn "\\fn",
  \ref cmdtypedef "\\typedef", and \ref cmdvar "\\var".

  \sa sections \ref cmdfn "\\fn", \ref cmdtypedef "\\typedef", and
               \ref cmdvar "\\var".

<hr>
\section cmdprotected \\protected

  \addindex \\protected
  Indicates that the member documented by the comment block is protected,
  i.e., should only be accessed by other members in the same or derived
  classes.

  Note that doxygen automatically detects the protection level of members
  in object-oriented languages. This command is intended for use only when
  the language does not support the concept of protection level natively
  (e.g. C, PHP 4).

  For starting a section of protected members, in a way similar to the
  "protected:" class marker in C++, use \ref cmdprotectedsection "\\protectedsection".

  \sa sections \ref cmdmemberof "\\memberof", \ref cmdpublic "\\public",
      \ref cmdprivate "\\private" and \ref cmdprotectedsection "\\protectedsection".

<hr>
\section cmdprotectedsection \\protectedsection

  \addindex \\protectedsection
  Starting a section of protected members, in a way similar to the
  "protected:" class marker in C++.
  Indicates that the member documented by the comment block is protected,
  i.e., should only be accessed by other members in the same or derived
  classes.

  \sa sections \ref cmdmemberof "\\memberof", \ref cmdpublic "\\public",
      \ref cmdprivate "\\private" and \ref cmdprotected "\\protected".

<hr>
\section cmdprotocol \\protocol <name> [<header-file>] [<header-name>]

  \addindex \\protocol
  Indicates that a comment block contains documentation for a
  protocol in Objective-C with name \<name\>. The arguments are equal
  to the \ref cmdclass "\\class" command.

  \sa section \ref cmdclass "\\class".

<hr>
\section cmdpublic \\public

  \addindex \\public
  Indicates that the member documented by the comment block is public,
  i.e., can be accessed by any other class or function.

  Note that doxygen automatically detects the protection level of members
  in object-oriented languages. This command is intended for use only when
  the language does not support the concept of protection level natively
  (e.g. C, PHP 4).

  For starting a section of public members, in a way similar to the
  "public:" class marker in C++, use \ref cmdpublicsection "\\publicsection".

  \sa sections \ref cmdmemberof "\\memberof", \ref cmdprotected "\\protected",
      \ref cmdprivate "\\private" and \ref cmdpublicsection "\\publicsection".

<hr>
\section cmdpublicsection \\publicsection

  \addindex \\publicsection
  Starting a section of public members, in a way similar to the
  "public:" class marker in C++.
  Indicates that the member documented by the comment block is public,
  i.e., can be accessed by any other class or function.

  \sa sections \ref cmdmemberof "\\memberof", \ref cmdprotected "\\protected",
      \ref cmdprivate "\\private" and \ref cmdpublic "\\public".

<hr>
\section cmdpure \\pure

  \addindex \\pure
  Indicates that the member documented by the comment block is pure virtual,
  i.e., it is abstract and has no implementation associated with it.

  This command is intended for use only when
  the language does not support the concept of pure virtual methods natively
  (e.g. C, PHP 4).

<hr>
\section cmdrelates \\relates <name>

  \addindex \\relates
  This command can be used in the documentation of a non-member function
  \<name\>. It puts the function inside the 'related function' section
  of the class documentation. This command is useful for documenting
  non-friend functions that are nevertheless strongly coupled to a certain
  class. It prevents the need of having to document a file, but
  only works for functions.

  \par Example:
  \include relates.cpp
  \htmlonly
  Click <a href="examples/relates/html/class_string.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_string}{Relates example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmdrelated \\related <name>

  \addindex \\related
  Equivalent to \ref cmdrelates "\\relates"

<hr>
\section cmdrelatesalso \\relatesalso <name>

  \addindex \\relatesalso
  This command can be used in the documentation of a non-member function
  \<name\>. It puts the function both inside the 'related function' section
  of the class documentation as well as leaving it at its normal file documentation
  location. This command is useful for documenting
  non-friend functions that are nevertheless strongly coupled to a certain
  class. It only works for functions.

<hr>
\section cmdrelatedalso \\relatedalso <name>

  \addindex \\relatedalso
  Equivalent to \ref cmdrelatesalso "\\relatesalso"

<hr>
\section cmdshowinitializer \\showinitializer

  \addindex \\showinitializer
  By default the value of a define and the initializer of a variable
  are only displayed if they are less than 30 lines long. By putting
  this command in a comment block of a define or variable, the
  initializer is shown unconditionally.
  The maximum number of initialization lines
  can be changed by means of the configuration parameter
  \ref cfg_max_initializer_lines "MAX_INITIALIZER_LINES", the default value is
  30.

  \sa section \ref cmdhideinitializer "\\hideinitializer".

<hr>
\section cmdstatic \\static

  \addindex \\static
  Indicates that the member documented by the comment block is static,
  i.e., it works on a class, instead of on an instance of the class.

  This command is intended for use only when
  the language does not support the concept of static methods natively (e.g. C).

<hr>
\section cmdstruct \\struct <name> [<header-file>] [<header-name>]

  \addindex \\struct
  Indicates that a comment block contains documentation for a
  struct with name \<name\>. The arguments are equal to the arguments of the
  \ref cmdclass "\\class" command.

  \sa section \ref cmdclass "\\class".

<hr>
\section cmdtypedef \\typedef (typedef declaration)

  \addindex \\typedef
  Indicates that a comment block contains documentation for a
  typedef (either global or as a member of a class).
  This command is equivalent to \ref cmdfn "\\fn",
  \ref cmdproperty "\\property", and \ref cmdvar "\\var".

  \sa section \ref cmdfn "\\fn", \ref cmdproperty "\\property", and
              \ref cmdvar "\\var".

<hr>
\section cmdunion \\union <name> [<header-file>] [<header-name>]

  \addindex \\union
  Indicates that a comment block contains documentation for a
  union with name \<name\>. The arguments are equal to the arguments of the
  \ref cmdclass "\\class" command.

  \sa section \ref cmdclass "\\class".

<hr>
\section cmdvar \\var (variable declaration)

  \addindex \\var
  Indicates that a comment block contains documentation for a variable or
  enum value (either global or as a member of a class).
  This command is equivalent to \ref cmdfn "\\fn",
  \ref cmdproperty "\\property", and \ref cmdtypedef "\\typedef".

  Note that for PHP one can also specify the type of the variable.
  The syntax is similar as for the `phpDocumentor` but the description has to start
  at the next line, i.e.
\verbatim
@var  datatype $varname
Description
\endverbatim

  \sa section \ref cmdfn "\\fn", \ref cmdproperty "\\property", and \ref cmdtypedef "\\typedef".

<hr>
\section cmdvhdlflow \\vhdlflow [(title for the flow chart)]

  \addindex \\vhdlflow
  This is a VHDL specific command, which can be put in the documentation of a process to
  produce a flow chart of the logic in the process.
  Optionally a title for the flow chart can be given.
  \note Currently the flow chart will only appear in the HTML output.

<hr>
\section cmdweakgroup \\weakgroup <name> [(title)]
  \addindex \\weakgroup
  Can be used exactly like \ref cmdaddtogroup "\\addtogroup", but has
  a lower priority when it comes to resolving conflicting grouping
  definitions.

  \sa page \ref grouping "Grouping" and section \ref cmdaddtogroup "\\addtogroup".

<hr>

\htmlonly</p><center><p>\endhtmlonly
<h2>
\htmlonly --- \endhtmlonly
Section indicators
\htmlonly --- \endhtmlonly
</h2>
\htmlonly</p></center><p>\endhtmlonly

<hr>
\section cmdattention \\attention { attention text }

  \addindex \\attention
  Starts a paragraph where a message that needs attention may be entered.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\attention commands will be joined into a single paragraph.
  The \c \\attention command ends when a blank line or some other
  sectioning command is encountered.

<hr>
\section cmdauthor \\author { list of authors }

  \addindex \\author
  Starts a paragraph where one or more author names may be entered.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\author commands will be joined into a single paragraph.
  Each author description will start a new line. Alternatively, one \c \\author command
  may mention several authors. The \c \\author command ends when a blank line or some other
  sectioning command is encountered.

  \par Example:
  \include author.cpp
  \htmlonly
  Click <a href="examples/author/html/class_some_nice_class.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_some_nice_class}{Author example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmdauthors \\authors { list of authors }

  \addindex \\authors
  Equivalent to \ref cmdauthor "\\author".

<hr>
\section cmdbrief \\brief { brief description }

  \addindex \\brief
  Starts a paragraph that serves as a brief description. For classes and files
  the brief description will be used in lists and at the start of the
  documentation page. For class and file members, the brief description
  will be placed at the declaration of the member and prepended to the
  detailed description. A brief description may span several lines (although
  it is advised to keep it brief!). A brief description ends when a
  blank line or another sectioning command is encountered. If multiple
  \c \\brief commands are present they will be joined. See section
  \ref cmdauthor "\\author" for an example.

  Synonymous to \ref cmdshort "\\short".

<hr>
\section cmdbug \\bug { bug description }

  \addindex \\bug
  Starts a paragraph where one or more bugs may be reported.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\bug commands will be joined into a single paragraph.
  Each bug description will start on a new line.
  Alternatively, one \c \\bug command may mention
  several bugs. The \c \\bug command ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdauthor "\\author"
  for an example.

<hr>
\section cmdcond \\cond [(section-label)]

  \addindex \\cond
  Starts a conditional section that ends with a corresponding
  \ref cmdendcond "\\endcond" command, which is typically found in
  another comment block. The main purpose of this pair of
  commands is to (conditionally) exclude part of a file from processing
  (in older version of doxygen this could only be achieved using C preprocessor commands).

  The section between \c \\cond and \ref cmdendcond "\\endcond" can be included by
  adding its section label to the \ref cfg_enabled_sections "ENABLED_SECTIONS"
  configuration option. If the section label is omitted, the section will
  be excluded from processing unconditionally. The section label can be a
  logical expression build of section labels, round brackets, && (AND), || (OR) and ! (NOT).
  If you use an expression you need to wrap it in round brackets, i.e
  <tt>\\cond (!LABEL1 && LABEL2)</tt>.

  For conditional sections within a comment block one should
  use a \ref cmdif "\\if" ... \ref cmdendif "\\endif" block.

  Conditional sections can be nested. In this case a nested section will only
  be shown if it and its containing section are included.

  Here is an example showing the commands in action:

\verbatim
/** An interface */
class Intf
{
  public:
    /** A method */
    virtual void func() = 0;

    /// @cond TEST

    /** A method used for testing */
    virtual void test() = 0;

    /// @endcond
};

/// @cond DEV
/*
 *  The implementation of the interface
 */
class Implementation : public Intf
{
  public:
    void func();

    /// @cond TEST
    void test();
    /// @endcond

    /// @cond
    /** This method is obsolete and does
     *  not show up in the documentation.
     */
    void obsolete();
    /// @endcond
};

/// @endcond
\endverbatim

The output will be different depending on whether or not \ref cfg_enabled_sections "ENABLED_SECTIONS"
contains \c TEST, or \c DEV

  \sa sections \ref cmdendcond "\\endcond" and  \ref cfg_enabled_sections "ENABLED_SECTIONS".
  \note Due to the moment of parsing the \c \\cond and \ref cmdendcond "\\endcond" commands cannot
  be used in \ref cfg_aliases "ALIASES".

<hr>
\section cmdcopyright \\copyright { copyright description }

  \addindex \\copyright
  Starts a paragraph where the copyright of an entity can be described.
  This paragraph will be indented.
  The text of the paragraph has no special internal structure.
  See section \ref cmdauthor "\\author" for an example.

<hr>
\section cmddate \\date { date description }

  \addindex \\date
  Starts a paragraph where one or more dates may be entered.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\date commands will be joined into a single paragraph.
  Each date description will start on a new line.
  Alternatively, one \c \\date command may mention
  several dates. The \c \\date command ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdauthor "\\author"
  for an example.

<hr>
\section cmddeprecated \\deprecated { description }

  \addindex \\deprecated
  Starts a paragraph indicating that this documentation block belongs to
  a deprecated entity. Can be used to describe alternatives,
  expected life span, etc.

<hr>
\section cmddetails \\details { detailed description }

  \addindex \\details
  Just like \ref cmdbrief "\\brief" starts a brief description, \c \\details
  starts the detailed description. You can also start a new paragraph (blank line)
  then the \c \\details command is not needed.

<hr>
\section cmdnoop \\noop ( text to be ignored )

  \addindex \\noop
  All the text, including the command, till the end of the line is ignored.
  The command will most commonly be used in combination with \ref cfg_aliases "ALIASES"
  to ignore not supported commands that are present for e.g. other processing tools.
<hr>
\section cmdelse \\else

  \addindex \\else
  Starts a conditional section if the previous conditional section
  was not enabled. The previous section should have been started with
  a \ref cmdif "\\if", \ref cmdifnot "\\ifnot", or \ref cmdelseif "\\elseif"
  command.

  \sa \ref cmdif "\\if", \ref cmdifnot "\\ifnot", \ref cmdelseif "\\elseif",
      \ref cmdendif "\\endif."

<hr>
\section cmdelseif \\elseif (section-label)

  \addindex \\elseif
  Starts a conditional documentation section if the previous section
  was not enabled. A conditional section is
  disabled by default. To enable it you must put the
  section-label after the \ref cfg_enabled_sections "ENABLED_SECTIONS"
  tag in the configuration file.  The section label can be a logical expression
  build of section names, round brackets, && (AND), || (OR) and ! (NOT).
  Conditional blocks can be nested. A nested section is
  only enabled if all enclosing sections are enabled as well.

  \sa sections \ref cmdendif "\\endif", \ref cmdifnot "\\ifnot",
              \ref cmdelse "\\else", and \ref cmdelseif "\\elseif".

<hr>
\section cmdendcond \\endcond

  \addindex \\endcond
  Ends a conditional section that was started by \ref cmdcond "\\cond".

  \sa section \ref cmdcond "\\cond".
  \note Due to the moment of parsing the \c \\endcond and \ref cmdcond "\\cond" commands cannot
  be used in \ref cfg_aliases "ALIASES".

<hr>
\section cmdendif \\endif

  \addindex \\endif
  Ends a conditional section that was started by \ref cmdif "\\if" or \ref cmdifnot "\\ifnot"
  For each \ref cmdif "\\if" or \ref cmdifnot "\\ifnot" one and only one matching
  \ref cmdendif "\\endif" must follow.

  \sa sections \ref cmdif "\\if" and \ref cmdifnot "\\ifnot".

<hr>
\section cmdexception \\exception <exception-object> { exception description }

  \addindex \\exception
  Starts an exception description for an exception object with name
  \<exception-object\>. Followed by a description of the exception.
  The existence of the exception object is not checked.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\exception commands will be joined into a single paragraph.
  Each exception description will start on a new line.
  The \c \\exception description ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdfn "\\fn" for an
  example.

<hr>
\section cmdif \\if (section-label)

  \addindex \\if
  Starts a conditional documentation section. The section ends
  with a matching \ref cmdendif "\\endif" command. A conditional section is
  disabled by default. To enable it you must put the
  section-label after the \ref cfg_enabled_sections "ENABLED_SECTIONS"
  tag in the configuration file.

  The section label can be a logical expression
  build of section names, round brackets, && (AND), || (OR) and ! (NOT).
  If you use an expression you need to wrap it in round brackets, i.e
  <tt>\\cond (!LABEL1 && LABEL2)</tt>.

  Conditional blocks can be nested. A nested section is
  only enabled if all enclosing sections are enabled as well.

  \par Example:
\verbatim
  /*! Unconditionally shown documentation.
   *  \if Cond1
   *    Only included if Cond1 is set.
   *  \endif
   *  \if Cond2
   *    Only included if Cond2 is set.
   *    \if Cond3
   *      Only included if Cond2 and Cond3 are set.
   *    \endif
   *    More text.
   *  \endif
   *  Unconditional text.
   */
\endverbatim

  You can also use conditional commands inside aliases. To
  document a class in two languages you could for instance use:

\par Example 2:
\verbatim
/*! \english
 *  This is English.
 *  \endenglish
 *  \dutch
 *  Dit is Nederlands.
 *  \enddutch
 */
class Example
{
};
\endverbatim

  Where the following aliases are defined in the configuration file:

\verbatim
ALIASES  = "english=\if english" \
           "endenglish=\endif" \
           "dutch=\if dutch" \
           "enddutch=\endif"
\endverbatim

  and \ref cfg_enabled_sections "ENABLED_SECTIONS" can be used to enable either \c english or \c dutch.

  \sa sections \ref cmdendif "\\endif", \ref cmdifnot "\\ifnot",
               \ref cmdelse "\\else", \ref cmdelseif "\\elseif", and
               \ref cfg_enabled_sections "ENABLED_SECTIONS".

<hr>
\section cmdifnot \\ifnot (section-label)

  \addindex \\ifnot
  Starts a conditional documentation section. The section ends
  with a matching \ref cmdendif "\\endif" command. This conditional section is
  enabled by default. To disable it you must put the
  section-label after the \ref cfg_enabled_sections "ENABLED_SECTIONS"
  tag in the configuration file.  The section label can be a logical expression
  build of section names, round brackets, && (AND), || (OR) and ! (NOT).

  \sa sections \ref cmdendif "\\endif", \ref cmdif "\\if",
               \ref cmdelse "\\else", and \ref cmdelseif "\\elseif", and
               \ref cfg_enabled_sections "ENABLED_SECTIONS".

<hr>
\section cmdinvariant \\invariant { description of invariant }

  \addindex \\invariant
  Starts a paragraph where the invariant of an entity can be described.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\invariant commands will be joined into a single paragraph.
  Each invariant description will start on a new line.
  Alternatively, one \c \\invariant command may mention
  several invariants. The \c \\invariant command ends when a blank line or some other
  sectioning command is encountered.

<hr>
\section cmdnote \\note { text }

  \addindex \\note
  Starts a paragraph where a note can be entered. The paragraph will be
  indented. The text of the paragraph has no special internal structure.
  All visual enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\note commands will be joined into a single paragraph.
  Each note description will start on a new line.
  Alternatively, one \c \\note command may mention
  several notes. The \c \\note command ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdpar "\\par"
  for an example.

<hr>
\section cmdpar \\par [(paragraph title)] { paragraph }

  \addindex \\par
  If a paragraph title is given this command starts a paragraph with a
  user defined heading. The heading extends until the end of the
  line. The paragraph following the command will be indented.

  If no paragraph title is given this command will start a new paragraph.
  This will also work inside other paragraph commands
  (like \ref cmdparam "\\param" or \ref cmdwarning "\\warning") without ending that command.

  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  The \c \\par command ends when a blank line or some other
  sectioning command is encountered.

  \par Example:
  \include par.cpp
  \htmlonly
  Click <a href="examples/par/html/class_par___test.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{class_par___test}{Par example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

<hr>
\section cmdparam \\param '['dir']' <parameter-name> { parameter description }

  \addindex \\param
  Starts a parameter description for a function parameter with name
  \<parameter-name\>, followed by a description of the parameter.
  The existence of the parameter is checked and a warning is given if
  the documentation of this (or any other) parameter is missing or not
  present in the function declaration or definition.

  The \c \\param command has an optional attribute, `dir`, specifying the direction
  of the parameter. Possible values are "[in]", "[in,out]", and "[out]",
  note the [square] brackets in this description.
  When a parameter is both input and output, [in,out] is used as attribute.
  Here is an example for the function \c memcpy:
  \code
/*!
 * Copies bytes from a source memory area to a destination memory area,
 * where both areas may not overlap.
 * @param[out] dest The memory area to copy to.
 * @param[in]  src  The memory area to copy from.
 * @param[in]  n    The number of bytes to copy
 */
void memcpy(void *dest, const void *src, size_t n);
  \endcode

  The parameter description is a paragraph with no special internal structure.
  All visual enhancement commands may be used inside the paragraph.

  Multiple adjacent \c \\param commands will be joined into a single paragraph.
  Each parameter description will start on a new line.
  The \c \\param description ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdfn "\\fn" for an
  example.

  Note that you can also document multiple parameters with a single
  \c \\param command using a comma separated list. Here is an example:

\code
/** Sets the position.
 *  @param x,y,z Coordinates of the position in 3D space.
 */
void setPosition(double x,double y,double z,double t)
{
}
\endcode

  Note that for PHP one can also specify the type (or types if you
  separate them with a pipe symbol) which are allowed for a parameter
  (as this is not part of the definition).
  The syntax is the same as for the `phpDocumentor`, i.e.
\verbatim
@param  datatype1|datatype2 $paramname description
\endverbatim

<hr>
\section cmdparblock \\parblock
  \addindex \\parblock
  For commands that expect a single paragraph as argument
  (such as \ref cmdpar "\\par", \ref cmdparam "\\param" and \ref cmdwarning "\\warning"),
  the \ref cmdparblock "\\parblock" command allows to start a
  description that covers multiple paragraphs, which then ends with
  \ref cmdendparblock "\\endparblock".

  Example:
\verbatim
/** Example of a param command with a description consisting of two paragraphs
 *  \param p
 *  \parblock
 *  First paragraph of the param description.
 *
 *  Second paragraph of the param description.
 *  \endparblock
 *  Rest of the comment block continues.
 */
\endverbatim
  Note that the \c \\parblock command may also appear directly after
  \ref cmdparam "\\param"'s first argument.

<hr>
\section cmdendparblock \\endparblock
  \addindex \\endparblock
  This ends a block of paragraphs started with \ref cmdparblock "\\parblock".

<hr>
\section cmdtparam \\tparam <template-parameter-name> { description }

  \addindex \\tparam
  Starts a template parameter for a class or function template parameter
  with name \<template-parameter-name\>, followed by a description of the
  template parameter.

  Otherwise similar to \ref cmdparam "\\param".

<hr>
\section cmdpost \\post { description of the postcondition }

  \addindex \\post
  Starts a paragraph where the postcondition of an entity can be described.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\post commands will be joined into a single paragraph.
  Each postcondition will start on a new line.
  Alternatively, one \c \\post command may mention
  several postconditions. The \c \\post command ends when a blank line or some other
  sectioning command is encountered.

<hr>
\section cmdpre \\pre { description of the precondition }

  \addindex \\pre
  Starts a paragraph where the precondition of an entity can be described.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\pre commands will be joined into a single paragraph.
  Each precondition will start on a new line.
  Alternatively, one \c \\pre command may mention
  several preconditions. The \c \\pre command ends when a blank line or some other
  sectioning command is encountered.

<hr>
\section cmdremark \\remark { remark text }

  \addindex \\remark
  Starts a paragraph where one or more remarks may be entered.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\remark commands will be joined into a single paragraph.
  Each remark will start on a new line.
  Alternatively, one \c \\remark command may mention
  several remarks. The \c \\remark command ends when a blank line or some other
  sectioning command is encountered.

<hr>
\section cmdremarks \\remarks { remark text }

  \addindex \\remarks
  Equivalent to \ref cmdremark "\\remark".

<hr>
\section cmdresult \\result { description of the result value }

  \addindex \\result
  Equivalent to \ref cmdreturn "\\return".

<hr>
\section cmdreturn \\return { description of the return value }

  \addindex \\return
  Starts a return value description for a function.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\return commands will be joined into a single paragraph.
  The \c \\return description ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdfn "\\fn" for an
  example.

<hr>
\section cmdreturns \\returns { description of the return value }

  \addindex \\returns
  Equivalent to \ref cmdreturn "\\return".

<hr>
\section cmdretval \\retval <return value> { description }

  \addindex \\retval
  Starts a description for a function's return value with name
  \<return value\>, followed by a description of the return value.
  The text of the paragraph that forms the description has no special
  internal structure. All visual enhancement commands may be used inside the
  paragraph.
  Multiple adjacent \c \\retval commands will be joined into a single paragraph.
  Each return value description will start on a new line.
  The \c \\retval description ends when a blank line or some other
  sectioning command is encountered.

<hr>
\section cmdsa \\sa { references }

  \addindex \\sa
  Starts a paragraph where one or more cross-references to classes,
  functions, methods, variables, files or URL may be specified.
  Two names joined by either <code>::</code> or <code>\#</code>
  are understood as referring to a class and one of its members.
  One of several overloaded methods or constructors
  may be selected by including a parenthesized list of argument types after
  the method name.

  Synonymous to \ref cmdsee "\\see".

  \sa section \ref autolink "autolink" for information on how to create links
      to objects.

<hr>
\section cmdsee \\see { references }

  \addindex \\see
  Equivalent to \ref cmdsa "\\sa". Introduced for compatibility with Javadoc.

<hr>
\section cmdshort \\short { short description }

  \addindex \\short
  Equivalent to \ref cmdbrief "\\brief".

<hr>
\section cmdsince \\since { text }

  \addindex \\since
  This command can be used to specify since when (version or time) an
  entity is available. The paragraph that follows \c \\since does not have any
  special internal structure. All visual enhancement commands may be
  used inside the paragraph. The \c \\since description ends when a blank
  line or some other sectioning command is encountered.

<hr>
\section cmdtest \\test { paragraph describing a test case }

  \addindex \\test
  Starts a paragraph where a test case can be described.
  The description will also add the test case to a separate test list.
  The two instances of the description will be cross-referenced.
  Each test case in the test list will be preceded by a header that
  indicates the origin of the test case.

<hr>
\section cmdthrow \\throw <exception-object> { exception description }

  \addindex \\throw
  Synonymous \ref cmdexception "\\exception".

  \par Note:
  the command \ref cmdthrows "\\throws" is a synonym for this command.

  \sa section \ref cmdexception "\\exception"

<hr>
\section cmdthrows \\throws <exception-object> { exception description }

  \addindex \\throws
  Equivalent to \ref cmdthrow "\\throw".

<hr>
\section cmdtodo \\todo { paragraph describing what is to be done }

  \addindex \\todo
  Starts a paragraph where a TODO item is described.
  The description will also add an item to a separate TODO list.
  The two instances of the description will be cross-referenced.
  Each item in the TODO list will be preceded by a header that
  indicates the origin of the item.

<hr>
\section cmdversion \\version { version number }

  \addindex \\version
  Starts a paragraph where one or more version strings may be entered.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\version commands will be joined into a single paragraph.
  Each version description will start on a new line.
  Alternatively, one \c \\version command may mention
  several version strings.
  The \\version command ends when a blank line or some other
  sectioning command is encountered.
  See section \ref cmdauthor "\\author" for an example.

<hr>
\section cmdwarning \\warning { warning message }

  \addindex \\warning
  Starts a paragraph where one or more warning messages may be entered.
  The paragraph will be indented.
  The text of the paragraph has no special internal structure. All visual
  enhancement commands may be used inside the paragraph.
  Multiple adjacent \c \\warning commands will be joined into a single paragraph.
  Each warning description will start on a new line.
  Alternatively, one \c \\warning command may mention
  several warnings. The \c \\warning command ends when a blank line or some other
  sectioning command is encountered. See section \ref cmdauthor "\\author"
  for an example.

<hr>
\section cmdxrefitem \\xrefitem <key> "(heading)" "(list title)" { text }

 \addindex \\xrefitem
 This command is a generalization of commands such as \ref cmdtodo "\\todo"
 and \ref cmdbug "\\bug".
 It can be used to create user-defined text sections which are automatically
 cross-referenced between the place of occurrence and a related page,
 which will be generated. On the related page all sections of
 the same type will be collected.

 The first argument \<key\> is an
 identifier uniquely representing the type of the section. The second argument
 is a quoted string representing the heading of the section under which
 text passed as the fourth argument is put. The third argument (list title)
 is used as the title for the related page containing all items with the
 same key. The keys \c "todo", \c "test", \c "bug" and \c "deprecated" are predefined.

 To get an idea on how to use the \c \\xrefitem command and what its effect
 is, consider the todo list, which (for English output) can be seen an
 alias for the command
 \verbatim \xrefitem todo "Todo" "Todo List" \endverbatim

 Since it is very tedious and error-prone to repeat the first three
 parameters of the command for each section, the command is meant to
 be used in combination with the \ref cfg_aliases "ALIASES" option in the
 configuration file.
 To define a new command \c \\reminder, for instance, one should add the following
 line to the configuration file:
 \verbatim ALIASES += "reminder=\xrefitem reminders \"Reminder\" \"Reminders\"" \endverbatim
 Note the use of escaped quotes for the second and third argument of the
 \c \\xrefitem command.

 In case parameter "(heading)" is the empty string no heading is generated. This can be useful
 when used in combination with the \ref cmdpage "\\page" command e.g.
\verbatim
/** @page my_errors My Errors
 *  @brief Errors page
 *
 *  Errors page contents.
 */

/** \error ERROR 101: in case a file can not be opened.
    Check about file system read/write access. */
#define MY_ERR_CANNOT_OPEN_FILE                   101

/** \error ERROR 102: in case a file can not be closed.
    Check about file system read/write access. */
#define MY_ERR_CANNOT_CLOSE_FILE                  102
\endverbatim
 with \c \\error defined as
 \verbatim ALIASES += "error=\xrefitem my_errors \"\" \"\"" \endverbatim

<hr>

\htmlonly</p><center><p>\endhtmlonly
<h2>
\htmlonly --- \endhtmlonly
Commands to create links
\htmlonly --- \endhtmlonly
</h2>
\htmlonly</p></center><p>\endhtmlonly

<hr>
\section cmdaddindex \\addindex (text)

  \addindex \\addindex
  This command adds (text) to the \LaTeX , DocBook and RTF index.

<hr>
\section cmdanchor \\anchor <word>

  \addindex \\anchor
  This command places an invisible, named anchor into the documentation
  to which you can refer with the \ref cmdref "\\ref" command.

  \sa section \ref cmdref "\\ref".

<hr>
\section cmdcite \\cite <label>

  \addindex \\cite
  Adds a bibliographic reference in the text and in the list of bibliographic
  references. The \<label\> must be a valid BibTeX label that can be found
  in one of the .bib files listed in \ref cfg_cite_bib_files "CITE_BIB_FILES".
  For the \LaTeX output the formatting of the reference in the text can be
  configured with \ref cfg_latex_bib_style "LATEX_BIB_STYLE". For other
  output formats a fixed representation is used. Note that using this
  command requires the \c bibtex tool to be present in the search path.

<hr>
\section cmdendlink \\endlink

  \addindex \\endlink
  This command ends a link that is started with the \ref cmdlink "\\link" command.

  \sa section \ref cmdlink "\\link".

<hr>
\section cmdlink \\link <link-object>

  \addindex \\link
  The links that are automatically generated by doxygen always have the
  name of the object they point to as link-text.

  The \c \\link command can be used to create a link to an object (a file,
  class, or member) with a user specified link-text.
  The link command should end with an \ref cmdendlink "\\endlink" command. All text between
  the \c \\link and \ref cmdendlink "\\endlink" commands serves as text for a link to
  the \<link-object\> specified as the first argument of \c \\link.

  \sa Section \ref autolink "autolink" for more information on automatically
  generated links and valid link-objects.

<hr>
\section cmdref \\ref <name> ["(text)"]

  \addindex \\ref
  Creates a reference to a named section, subsection, page or anchor.
  For HTML documentation the reference command will generate a link to
  the section. For a section or subsection the title of the section will be
  used as the text of the link. For an anchor the optional text between quotes
  will be used or \<name\> if no text is specified.
  For \LaTeX documentation the reference command will
  generate a section number for sections or the text followed by a
  page number if \<name\> refers to an anchor.

  \sa
    Section \ref cmdpage "\\page" for an example of the \c \\ref command.

<hr>
\section cmdrefitem \\refitem <name>
  \addindex \\refitem
  Just like the \ref cmdref "\\ref" command, this command creates a reference
  to a named section, but this reference appears in a list that is started by
  \ref cmdsecreflist "\\secreflist"
  and ends with \ref cmdendsecreflist "\\endsecreflist".
  An example of such a list can be seen
  \ref showsecreflist "at the top of the page".

<hr>
\section cmdsecreflist \\secreflist
  \addindex \\secreflist
  Starts an index list of item, created with \ref cmdrefitem "\\refitem"
  that each link to a named section.

<hr>
\section cmdendsecreflist \\endsecreflist
  \addindex \\endsecreflist
  End an index list started with \ref cmdsecreflist "\\secreflist".

<hr>
\section cmdsubpage \\subpage <name> ["(text)"]

  \addindex \\subpage
  This command can be used to create a hierarchy of pages. The
  same structure can be made using the \ref cmddefgroup "\\defgroup" and
  \ref cmdingroup "\\ingroup" commands, but for pages the \c \\subpage command
  is often more convenient. The main page (see \ref cmdmainpage "\\mainpage")
  is typically the root of hierarchy.

  This command behaves similar as \ref cmdref "\\ref" in the sense that
  it creates a reference to a page labeled \<name\> with the optional
  link text as specified in the second argument.

  It differs from the \ref cmdref "\\ref" command in that it only works for pages,
  and creates a parent-child relation between pages, where the
  child page (or sub page) is identified by label \<name\>.

  See the \ref cmdsection "\\section"
  and \ref cmdsubsection "\\subsection" commands if you want to add structure
  without creating multiple pages.

  \note Each page can be the sub page of only one other page and
  no cyclic relations are allowed, i.e. the page hierarchy must have a tree
  structure.

  Here is an example:
\verbatim
/*! \mainpage A simple manual

Some general info.

This manual is divided in the following sections:
- \subpage intro
- \subpage advanced "Advanced usage"
*/

//-----------------------------------------------------------

/*! \page intro Introduction
This page introduces the user to the topic.
Now you can proceed to the \ref advanced "advanced section".
*/

//-----------------------------------------------------------

/*! \page advanced Advanced Usage
This page is for advanced users.
Make sure you have first read \ref intro "the introduction".
*/
\endverbatim

<hr>
\section cmdtableofcontents \\tableofcontents['{'[option[:level]][,option[:level]]*'}']

  \addindex \\tableofcontents
  Creates a table of contents at the top of a page, listing all
  sections and subsections in the page. The `option` can be `HTML` or `LaTeX`
  or `XML` or `DocBook`. When a `level` is specified this means the maximum nesting level
  that is shown. The value of `level` should be in the range 1..5, values outside
  this range are considered to be 5. In case no `level` is specified `level` is
  set to 5 (show all)
  In case no `option`. is specified \c \\tableofcontents acts as if just the
  `option` `HTML` and `XML` was specified. In case of multiple \c \\tableofcontents
  commands in a page the `option`(s) will be used additional to the already
  specified `option`(s), but only the last `level` of an `option` is valid.

  \warning This command only works inside related page documentation and
           \e not in other documentation blocks and only has effect in the
           specified output!

<hr>
\section cmdsection \\section <section-name> (section title)

  \addindex \\section
  Creates a section with name \<section-name\>. The title of the
  section should be specified as the second argument of the \c \\section
  command.

  \warning This command only works inside related page documentation and
           \e not in other documentation blocks!

  \sa
   Section \ref cmdpage "\\page" for an example of the
           \c \\section command.

<hr>
\section cmdsubsection \\subsection <subsection-name> (subsection title)

  \addindex \\subsection
  Creates a subsection with name \<subsection-name\>. The title of the
  subsection should be specified as the second argument of the \c \\subsection
  command.

  \warning This command only works inside a section of a related page
           documentation block and
           \e not in other documentation blocks!

  \sa
   Section \ref cmdpage "\\page" for an example of the
           \c \\subsection command.

<hr>
\section cmdsubsubsection \\subsubsection <subsubsection-name> (subsubsection title)

  \addindex \\subsubsection
  Creates a subsubsection with name \<subsubsection-name\>. The title of the
  subsubsection should be specified as the second argument of the
  \c \\subsubsection command.

  \warning This command only works inside a subsection of a
           related page documentation block and
           \e not in other documentation blocks!

  \sa
   Section \ref cmdpage "\\page" for an example of the
           \ref cmdsection "\\section" command and
           \ref cmdsubsection "\\subsection" command.

<hr>
\section cmdparagraph \\paragraph <paragraph-name> (paragraph title)

  \addindex \\paragraph
  Creates a named paragraph with name \<paragraph-name\>. The title of the
  paragraph should be specified as the second argument of the
  \c \\paragraph command.

  \warning This command only works inside a subsubsection of a
           related page documentation block and
           \e not in other documentation blocks!

<hr>

\htmlonly</p><center><p>\endhtmlonly
<h2>
\htmlonly --- \endhtmlonly
Commands for displaying examples
\htmlonly --- \endhtmlonly
</h2>
\htmlonly</p></center><p>\endhtmlonly

<hr>
\section cmddontinclude \\dontinclude['{lineno}'] <file-name>

  \addindex \\dontinclude
  This command can be used to parse a source file without actually
  verbatim including it in the documentation (as the \ref cmdinclude "\\include" command does).
  This is useful if you want to divide the source file into smaller pieces and
  add documentation between the pieces.
  Source files or directories can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH"
  tag of doxygen's configuration file.

  You can add option `{lineno}` to enable line numbers for the included code if desired.

  The class and member declarations and definitions inside the code fragment
  are 'remembered' during the parsing of the comment block that contained
  the \c \\dontinclude command.

  For line by line descriptions of source files, one or more lines
  of the example can be displayed using the \ref cmdline "\\line",
  \ref cmdskip "\\skip", \ref cmdskipline "\\skipline", and
  \ref cmduntil "\\until" commands. An internal pointer is used for these commands. The
  \c \\dontinclude command sets the pointer to the first line of the example.

  \par Example:
  \include include.cpp
  Where the example file \c include_test.cpp looks as follows:
  \include include_test.cpp
  \htmlonly
  Click <a href="examples/include/html/pag_example.html">here</a>
  for the corresponding HTML documentation that is generated by doxygen.
  \endhtmlonly
  \latexonly
  See \hyperlink{include_example}{Include example}
  for the corresponding \mbox{\LaTeX} documentation that is generated by doxygen.
  \endlatexonly

  \sa sections \ref cmdline "\\line", \ref cmdskip "\\skip",
               \ref cmdskipline "\\skipline", \ref cmduntil "\\until", and
               \ref cmdinclude "\\include".

<hr>
\section cmdinclude \\include['{'option'}'] <file-name>

  \addindex \\include
  This command can be used to include a source file as a block of code.
  The command takes the name of an include file as an argument.
  Source files or directories can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH"
  tag of doxygen's configuration file.

  If \<file-name\> itself is not unique for the set of example files specified
  by the \ref cfg_example_path "EXAMPLE_PATH" tag, you can include part
  of the absolute path to disambiguate it.

  Using the \c \\include command is equivalent to inserting the file into
  the documentation block and surrounding it
  with \ref cmdcode "\\code" and \ref cmdendcode "\\endcode" commands.

  The main purpose of the \c \\include command is to avoid code
  duplication in case of example blocks that consist of multiple
  source and header files.

  For a line by line description of a source files use the
  \ref cmddontinclude "\\dontinclude" command in combination with
  the \ref cmdline "\\line", \ref cmdskip "\\skip",
  \ref cmdskipline "\\skipline",
  and \ref cmduntil "\\until" commands.

  Alternatively, the \ref cmdsnippet "\\snippet" command can be used to
  include only a fragment of a source file. For this to work the
  fragment has to be marked.

  \note Doxygen's special commands do not work inside blocks of code.
  It is allowed to nest C-style comments inside a code block though.

  The `option` can either be `lineno` or `doc`.
  The `option` `lineno` can be used to enable line numbers for the included code if desired.
  The `option` `doc` can be used to treat the file as documentation rather than code.

  \note When using the `{doc}` option,
       some commands like \ref cmdcond "\\cond" and \ref cmdif "\\if" don't work with
       this command due to the moment of parsing.

  \note The included documentation should not have comment signs in it as they will appear
       in the documentation as well.

  \sa sections \ref cmdexample "\\example", \ref cmddontinclude "\\dontinclude",
      \ref cmdverbatim "\\verbatim", \ref cmdincludedoc "\\includedoc", and
      \ref cmdsnippet "\\snippet".

<hr>
\section cmdincludelineno \\includelineno <file-name>

  \addindex \\includelineno
  This command is obsolete and is still supported for backward compatibility reasons,
  it works the same way as \ref cmdinclude "\\include{lineno}"

  \sa sections \ref cmdinclude "\\include{lineno}".

<hr>
\section cmdincludedoc \\includedoc <file-name>

  \addindex \\includedoc
  This command is obsolete and is still supported for backward compatibility reasons,
  it works the same way as \ref cmdinclude "\\include{doc}"

  \sa section \ref cmdinclude "\\include{doc}".

<hr>
\section cmdline \\line ( pattern )

  \addindex \\line
  This command searches line by line through the example that was last
  included using \ref cmdinclude "\\include" or
  \ref cmddontinclude "\\dontinclude" until it finds a non-blank
  line. If that line contains the specified pattern, it is written
  to the output.

  The internal pointer that is used to keep track of the current line in
  the example, is set to the start of the line following the non-blank
  line that was found (or to the end of the example if no such line could
  be found).

  See section \ref cmddontinclude "\\dontinclude" for an example.

<hr>
\section cmdskip \\skip ( pattern )

  \addindex \\skip
  This command searches line by line through the example that was last
  included using \ref cmdinclude "\\include" or
  \ref cmddontinclude "\\dontinclude" until it finds a line that contains
  the specified pattern.

  The internal pointer that is used to keep track of the current line in
  the example, is set to the start of the line that contains the specified
  pattern (or to the end of the example if the pattern could not be found).

  See section \ref cmddontinclude "\\dontinclude" for an example.

<hr>
\section cmdskipline \\skipline ( pattern )

  \addindex \\skipline
  This command searches line by line through the example that was last
  included using \ref cmdinclude "\\include" or
  \ref cmddontinclude "\\dontinclude" until it finds a line that contains
  the specified pattern. It then writes the line to the output.

  The internal pointer that is used to keep track of the current line in
  the example, is set to the start of the line following the line that is
  written (or to the end of the example if the pattern could not be found).

  \par Note:
    The command:
    \verbatim\skipline pattern\endverbatim
    is equivalent to:
\verbatim
\skip pattern
\line pattern\endverbatim

  See section \ref cmddontinclude "\\dontinclude" for an example.

<hr>
\section cmdsnippet \\snippet['{'option'}'] <file-name> ( block_id )

 \addindex \\snippet
 Where the \ref cmdinclude "\\include" command can be used to include
 a complete file as source code, this command can be used to quote only
 a fragment of a source file. In case `this` is used as <file-name> the
 current file is taken as file to take the snippet from.

 For example, the putting the following command in the documentation,
 references a snippet in file \c example.cpp residing in a subdirectory
 which should be pointed to by \ref cfg_example_path "EXAMPLE_PATH".

\verbatim
  \snippet snippets/example.cpp Adding a resource
\endverbatim

 The text following the file name is the unique identifier for the snippet.
 This is used to delimit the quoted code in the relevant snippet file as
 shown in the following example that corresponds to the above \c \\snippet
 command:

\code
    QImage image(64, 64, QImage::Format_RGB32);
    image.fill(qRgb(255, 160, 128));

//! [Adding a resource]
    document->addResource(QTextDocument::ImageResource,
        QUrl("mydata://image.png"), QVariant(image));
//! [Adding a resource]
    ...
\endcode

 Note that the lines containing the block markers will not be included,
 so the output will be:

\code
    document->addResource(QTextDocument::ImageResource,
        QUrl("mydata://image.png"), QVariant(image));
\endcode

 Note also that the [block_id] markers should appear exactly twice in the
 source file.

 The `option` can either be `lineno` or `doc`.
 The `option` `lineno` can be used to enable line numbers for the included code if desired.
 The `option` `doc` can be used to treat the file as documentation rather than code.

 \note When using the `{doc}` option,
       some commands like \ref cmdcond "\\cond" and \ref cmdif "\\if" don't work with
       this command due to the moment of parsing.

 \note The included documentation should not have comment signs in it as they will appear
       in the documentation as well.

 see section \ref cmddontinclude "\\dontinclude" for an alternative way
 to include fragments of a source file that does not require markers.

<hr>
\section cmdsnippetlineno \\snippetlineno <file-name> ( block_id )

  \addindex \\snippetlineno
  This command is obsolete and is still supported for backward compatibility reasons,
  it works the same way as \ref cmdsnippet "\\snippet{lineno}"

  \sa sections \ref cmdsnippet "\\snippet{lineno}"

<hr>
\section cmdsnippetdoc \\snippetdoc <file-name> ( block_id )

  \addindex \\snippetdoc
  This command is obsolete and is still supported for backward compatibility reasons,
  it works the same way as \ref cmdsnippet "\\snippet{doc}"

  \sa section \ref cmdsnippet "\\snippet{doc}" and \ref cmdinclude "\\include{doc}".

<hr>
\section cmduntil \\until ( pattern )

  \addindex \\until
  This command writes all lines of the example that was last
  included using \ref cmdinclude "\\include" or
  \ref cmddontinclude "\\dontinclude"  to the output, until it finds
  a line containing the specified pattern. The line containing the pattern
  will be written as well.

  The internal pointer that is used to keep track of the current line in
  the example, is set to the start of the line following last written
  line (or to the end of the example if the pattern could not be found).

  See section \ref cmddontinclude "\\dontinclude" for an example.

<hr>
\section cmdverbinclude \\verbinclude <file-name>

  \addindex \\verbinclude
  This command includes the contents of the file \<file-name\> verbatim in the documentation.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmdverbatim "\\verbatim" and \ref cmdendverbatim "\\endverbatim"
  commands around it.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

<hr>
\section cmdhtmlinclude \\htmlinclude ["[block]"] <file-name>

  \addindex \\htmlinclude
  This command includes the contents of the file \<file-name\> as is in the HTML documentation
  and tagged with `<htmlonly>` in the generated XML output.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmdhtmlonly "\\htmlonly" and \ref cmdendhtmlonly "\\endhtmlonly"
  commands around it.

  Normally the contents of the file indicated by \ref cmdhtmlinclude "\\htmlinclude"
  is inserted as-is. When you
  want to insert a HTML fragment that has block scope like a table or list
  which should appear outside \<p\>..\</p\>, this can lead to invalid HTML.
  You can use \\htmlinclude[block] to make doxygen
  end the current paragraph and restart after the file is included.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

  \sa section \ref cmdhtmlonly "\\htmlonly",
  \ref cmdlatexinclude "\\latexinclude",
  \ref cmdrtfinclude "\\rtfinclude",
  \ref cmdmaninclude "\\maninclude",
  \ref cmddocbookinclude "\\docbookinclude" and
  \ref cmdxmlinclude "\\xmlinclude".

<hr>

\section cmdlatexinclude \\latexinclude <file-name>

  \addindex \\latexinclude
  This command includes the contents of the file \<file-name\> as is in the \LaTeX documentation
  and tagged with `<latexonly>` in the generated XML output.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmdlatexonly "\\latexonly" and \ref cmdendlatexonly "\\endlatexonly"
  commands around it.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

  \sa section \ref cmdlatexonly "\\latexonly",
  \ref cmdhtmlinclude "\\htmlinclude",
  \ref cmdrtfinclude "\\rtfinclude",
  \ref cmdmaninclude "\\maninclude",
  \ref cmddocbookinclude "\\docbookinclude" and
  \ref cmdxmlinclude "\\xmlinclude".

<hr>

\section cmdrtfinclude \\rtfinclude <file-name>

  \addindex \\rtfinclude
  This command includes the contents of the file \<file-name\> as is in the RTF documentation
  and tagged with `<rtfonly>` in the generated XML output.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmdrtfonly "\\rtfonly" and \ref cmdendrtfonly "\\endrtfonly"
  commands around it.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

  \sa section \ref cmdrtfonly "\\rtfonly",
  \ref cmdhtmlinclude "\\htmlinclude",
  \ref cmdlatexinclude "\\latexinclude",
  \ref cmdmaninclude "\\maninclude",
  \ref cmddocbookinclude "\\docbookinclude" and
  \ref cmdxmlinclude "\\xmlinclude".

<hr>

\section cmdmaninclude \\maninclude <file-name>

  \addindex \\maninclude
  This command includes the contents of the file \<file-name\> as is in the MAN documentation
  and tagged with `<manonly>` in the generated XML output.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmdmanonly "\\manonly" and \ref cmdendmanonly "\\endmanonly"
  commands around it.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

  \sa section \ref cmdmanonly "\\manonly",
  \ref cmdhtmlinclude "\\htmlinclude",
  \ref cmdlatexinclude "\\latexinclude",
  \ref cmdrtfinclude "\\rtfinclude",
  \ref cmddocbookinclude "\\docbookinclude" and
  \ref cmdxmlinclude "\\xmlinclude".

<hr>

\section cmddocbookinclude \\docbookinclude <file-name>

  \addindex \\docbookinclude
  This command includes the contents of the file \<file-name\> as is in the DocBook documentation
  and tagged with `<docbookonly>` in the generated XML output.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmddocbookonly "\\docbookonly" and \ref cmdenddocbookonly "\\enddocbookonly"
  commands around it.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

  \sa section \ref cmddocbookonly "\\docbookonly",
  \ref cmdhtmlinclude "\\htmlinclude",
  \ref cmdlatexinclude "\\latexinclude",
  \ref cmdrtfinclude "\\rtfinclude",
  \ref cmdmaninclude "\\maninclude" and
  \ref cmdxmlinclude "\\xmlinclude".

<hr>

\section cmdxmlinclude \\xmlinclude <file-name>

  \addindex \\xmlinclude
  This command includes contents of the file \<file-name\> as is in the XML documentation.
  The command is equivalent to pasting the contents of the file in the documentation and
  placing \ref cmdxmlonly "\\xmlonly" and \ref cmdendxmlonly "\\endxmlonly"
  commands around it.

  Files or directories that doxygen should look for can be specified using the
  \ref cfg_example_path "EXAMPLE_PATH" tag of doxygen's configuration file.

  \sa section \ref cmdxmlonly "\\xmlonly",
  \ref cmdhtmlinclude "\\htmlinclude",
  \ref cmdlatexinclude "\\latexinclude",
  \ref cmdrtfinclude "\\rtfinclude",
  \ref cmdmaninclude "\\maninclude" and
  \ref cmddocbookinclude "\\docbookinclude".

<hr>

\htmlonly</p><center><p>\endhtmlonly
<h2>
\htmlonly --- \endhtmlonly
Commands for visual enhancements
\htmlonly --- \endhtmlonly
</h2>
\htmlonly</p></center><p>\endhtmlonly

\section cmda \\a <word>

  \addindex \\a
  Displays the argument \<word\> in italics.
  Use this command to emphasize words.
  Use this command to refer to member arguments in the running text.

  \par Example:
  \verbatim
  ... the \a x and \a y coordinates are used to ...
  \endverbatim
  This will result in the following text:<br><br>
  ... the \a x and \a y coordinates are used to ...

  Equivalent to \ref cmde "\\e" and \ref cmdem "\\em".
  To emphasize multiple words use \<em\>multiple words\</em\>.

<hr>
\section cmdarg \\arg { item-description }

  \addindex \\arg
  This command has one argument that continues until the first
  blank line or until another \c \\arg is encountered.
  The command can be used to generate a simple, not nested list of
  arguments.
  Each argument should start with a \c \\arg command.

  \par Example:
  Typing:
  \verbatim
  \arg \c AlignLeft left alignment.
  \arg \c AlignCenter center alignment.
  \arg \c AlignRight right alignment

  No other types of alignment are supported.
  \endverbatim
  will result in the following text:<br><br>
  <ul>
  <li> \c AlignLeft left alignment.
  <li> \c AlignCenter center alignment.
  <li> \c AlignRight right alignment
  </ul><br>
  No other types of alignment are supported.

  \par Note:
  For nested lists, HTML commands should be used.

  Equivalent to \ref cmdli "\\li"


<hr>
\section cmdb \\b <word>

  \addindex \\b
  Displays the argument \<word\> using a bold font.
  Equivalent to \<b\>word\</b\>.
  To put multiple words in bold use \<b\>multiple words\</b\>.

<hr>
\section cmdc \\c <word>

  \addindex \\c
  Displays the argument \<word\> using a typewriter font.
  Use this to refer to a word of code.
  Equivalent to \<tt\>word\</tt\>.

  \par Example:
  Typing:
  \verbatim
     ... This function returns \c void and not \c int ...
  \endverbatim
  will result in the following text:<br><br>
     ... This function returns \c void and not \c int ...

  Equivalent to \ref cmdp "\\p"
  To have multiple words in typewriter font use \<tt\>multiple words\</tt\>.

<hr>
\section cmdcode \\code['{'<word>'}']

  \addindex \\code
  Starts a block of code. A code block is treated differently
  from ordinary text. It is interpreted as source code. The names of
  classes and members and other documented entities are automatically
  replaced by links to the documentation.

  By default the language that is assumed for syntax highlighting is based
  on the location where the \c \\code block was found. If this part of
  a Python file for instance, the syntax highlight will be done according
  to the Python syntax.

  If it is unclear from the context which language is meant (for instance the
  comment is in a <code>.txt</code> or <code>.markdown</code> file) then you can also explicitly
  indicate the language, by putting the file extension typically
  that doxygen associated with the language in curly brackets after the
  code block. Here is an example:

\verbatim
  \code{.py}
  class Python:
     pass
  \endcode

  \code{.cpp}
  class Cpp {};
  \endcode
\endverbatim

  If the contents of the code block are in a language that doxygen cannot parse, doxygen
  will just show the output as-is. You can make this explicit using .unparsed, or by
  giving some other extension that doxygen doesn't support, e.g.

\verbatim
  \code{.unparsed}
  Show this as-is please
  \endcode

  \code{.sh}
  echo "This is a shell script"
  \endcode
\endverbatim

  \sa section \ref cmdendcode "\\endcode" and section \ref cmdverbatim "\\verbatim".

<hr>
\section cmdcopydoc \\copydoc <link-object>

  \addindex \\copydoc
  Copies a documentation block from the object specified by \<link-object\>
  and pastes it at the location of the command. This command can be useful
  to avoid cases where a documentation block would otherwise have to be
  duplicated or it can be used to extend the documentation of an inherited
  member.

  The link object can point to a member (of a class, file or group),
  a class, a namespace, a group, a page, or a file (checked in that order).
  Note that if the object pointed to is a member (function, variable,
  typedef, etc), the compound (class, file, or group) containing it
  should also be documented for the copying to work.

  To copy the documentation for a member of a
  class one can, for instance, put the following in the documentation:

\verbatim
  /*! @copydoc MyClass::myfunction()
   *  More documentation.
   */
\endverbatim

  if the member is overloaded, you should specify the argument types
  explicitly (without spaces!), like in the following:

\verbatim
  //! @copydoc MyClass::myfunction(type1,type2)
\endverbatim

  Qualified names are only needed if the context in which the documentation
  block is found requires them.

  The \c \\copydoc command can be used recursively, but cycles in the \c \\copydoc
  relation will be broken and flagged as an error.

  Note that <code>\\copydoc foo()</code> is roughly equivalent to doing:
\verbatim
  \brief \copybrief foo()
  \details \copydetails foo()
\endverbatim
  See \ref cmdcopybrief "\\copybrief" and
  \ref cmdcopydetails "\\copydetails" for copying only the brief or
  detailed part of the comment block.

<hr>
\section cmdcopybrief \\copybrief <link-object>

  \addindex \\copybrief
Works in a similar way as \ref cmdcopydoc "\\copydoc" but will
only copy the brief description, not the detailed documentation.

<hr>
\section cmdcopydetails \\copydetails <link-object>

  \addindex \\copydetails
Works in a similar way as \ref cmdcopydoc "\\copydoc" but will
only copy the detailed documentation, not the brief description.

<hr>
\section cmddocbookonly \\docbookonly

  \addindex \\docbookonly
  Starts a block of text that only will be verbatim included in the
  generated DocBook documentation and tagged with `<docbookonly>` in the generated
  XML output. The block ends with a
  \ref cmdenddocbookonly "\\enddocbookonly" command.

  \sa section \ref cmdmanonly "\\manonly",
              \ref cmdlatexonly "\\latexonly",
              \ref cmdrtfonly "\\rtfonly",
              \ref cmdxmlonly "\\xmlonly",
              \ref cmdhtmlonly "\\htmlonly" and
              \ref cmddocbookinclude "\\docbookinclude".

<hr>
\section cmddot \\dot ["caption"] [<sizeindication>=<size>]

  \addindex \\dot
  Starts a text fragment which should contain a valid description of a
  dot graph. The text fragment ends with \ref cmdenddot "\\enddot".
  Doxygen will pass the text on to dot and include the resulting
  image (and image map) into the output.

  The first argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  between quotes even if it does not contain any spaces. The quotes are
  stripped before the caption is displayed.

  The second argument is also optional and can be used to specify the
  width or height of the image.
  For a description of the possibilities see the paragraph
  \ref image_sizeindicator "Size indication" with the
  \ref cmdimage "\\image" command.

  The nodes of a graph can be made clickable by using the URL attribute.
  By using the command \ref cmdref "\\ref" inside the URL value you can conveniently
  link to an item inside doxygen. Here is an example:

  \note doxygen creates a temporary file that is automatically removed unless
  the \ref cfg_dot_cleanup "DOT_CLEANUP" tag is set to `NO`.

\code
/*! class B */
class B {};

/*! class C */
class C {};

/*! \mainpage
 *
 *  Class relations expressed via an inline dot graph:
 *  \dot
 *  digraph example {
 *      node [shape=record, fontname=Helvetica, fontsize=10];
 *      b [ label="class B" URL="\ref B"];
 *      c [ label="class C" URL="\ref C"];
 *      b -> c [ arrowhead="open", style="dashed" ];
 *  }
 *  \enddot
 *  Note that the classes in the above graph are clickable
 *  (in the HTML output).
 */
\endcode

<hr>
\section cmdemoji \\emoji "name"

This command will produce an emoji character given its name.

The supported names are the ones also supported by GitHub and listed here
https://gist.github.com/rxaviers/7360908

You can use the name with or without colons, i.e.
`\emoji smile` is the same as writing `\emoji :smile:`.
When an emoji is not supported the name with by places in the
text with in between colons, i.e. `\emoji unsupported` will produce
`:unsupported:` in the output. Doxygen will also give a warning message.

See also the \ref emojisup "emoji support page" for details.

<hr>
\section cmdmsc \\msc ["caption"] [<sizeindication>=<size>]

  \addindex \\msc
  Starts a text fragment which should contain a valid description of a
  message sequence chart. See http://www.mcternan.me.uk/mscgen/ for examples.
  The text fragment ends with \ref cmdendmsc "\\endmsc".

  The first argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  between quotes even if it does not contain any spaces. The quotes are
  stripped before the caption is displayed.

  The second argument is also optional and can be used to specify the
  width or height of the image.
  For a description of the possibilities see the paragraph
  \ref image_sizeindicator "Size indication" with the
  \ref cmdimage "\\image" command.

  \note The text fragment should only include the part of the message
  sequence chart that is
  within the <code>msc {...}</code> block (this is different from
  \ref cmdmscfile "\\mscfile").
  \note mscgen is now built in into doxygen
  \note doxygen creates a temporary file that is automatically removed unless
  the \ref cfg_dot_cleanup "DOT_CLEANUP" tag is set to `NO`.

Here is an example of the use of the \c \\msc command.
\code
/** Sender class. Can be used to send a command to the server.
 *  The receiver will acknowledge the command by calling Ack().
 *  \msc
 *    Sender,Receiver;
 *    Sender->Receiver [label="Command()", URL="\ref Receiver::Command()"];
 *    Sender<-Receiver [label="Ack()", URL="\ref Ack()", ID="1"];
 *  \endmsc
 */
class Sender
{
  public:
    /** Acknowledgment from server */
    void Ack(bool ok);
};

/** Receiver class. Can be used to receive and execute commands.
 *  After execution of a command, the receiver will send an acknowledgment
 *  \msc
 *    Receiver,Sender;
 *    Receiver<-Sender [label="Command()", URL="\ref Command()"];
 *    Receiver->Sender [label="Ack()", URL="\ref Sender::Ack()", ID="1"];
 *  \endmsc
 */
class Receiver
{
  public:
    /** Executable a command on the server */
    void Command(int commandId);
};

\endcode

  \sa section \ref cmdmscfile "\\mscfile".

<hr>
\section cmdstartuml \\startuml ['{'option[,option]'}'] ["caption"] [<sizeindication>=<size>]

  \addindex \\startuml

  Starts a text fragment which should contain a valid description of a
  PlantUML diagram. See https://plantuml.com/ for examples.
  The text fragment ends with \ref cmdenduml "\\enduml".
  \note You need to install Java and the PlantUML's jar file,
  if you want to use this command. When using PlantUML in \LaTeX you have to download
  some more `jar` files, for details see the PlantUML documentation.
  The location of the jar file should be specified using
  \ref cfg_plantuml_jar_path "PLANTUML_JAR_PATH".

  Not all diagrams can be created with the PlantUML `@startuml` command but need another
  PlantUML `@start...` command. This will look like `@start<engine>` where currently supported are
  the following `<engine>`'s: `uml`, `bpm`, `wire`, `dot`, `ditaa`, `salt`, `math`, `latex`,
  `gantt`, `mindmap`, `wbs`, `yaml`, `creole`, `json`, `flow`a, `board` and `git`.s
  By default the `<engine>` is `uml`. The `<engine>` can be specified as an option.
  Also the file to write the resulting image to can be specified by means of an option, see the
  description of the first (optional) argument for details.
  Of course only one `<engine>` can be specified and also the filename can only be specified once.

  The first argument is optional and is for compatibility with running PlantUML as a preprocessing
  step before running doxygen, you can also add the name of the image file after `\startuml`
  and inside curly brackets as option, i.e.
  \verbatim
  @startuml{myimage.png} "Image Caption" width=5cm
  Alice -> Bob : Hello
  @enduml
  \endverbatim
  When the name of the image is specified, doxygen will generate an image with that name.
  Without the name doxygen will choose a name automatically.

  The second argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  between quotes even if it does not contain any spaces. The quotes are
  stripped before the caption is displayed.

  The third argument is also optional and can be used to specify the
  width or height of the image.
  For a description of the possibilities see the paragraph
  \ref image_sizeindicator "Size indication" with the
  \ref cmdimage "\\image" command.

  \note doxygen creates a temporary file that is automatically removed unless
  the \ref cfg_dot_cleanup "DOT_CLEANUP" tag is set to `NO`.

Here is an example of the use of the \c \\startuml command.
\code
/** Sender class. Can be used to send a command to the server.
 *  The receiver will acknowledge the command by calling Ack().
 *  \startuml
 *    Sender->Receiver  : Command()
 *    Sender<--Receiver : Ack()
 *  \enduml
 */
class Sender
{
  public:
    /** Acknowledgment from server */
    void Ack(bool ok);
};

/** Receiver class. Can be used to receive and execute commands.
 *  After execution of a command, the receiver will send an acknowledgment
 *  \startuml
 *    Receiver<-Sender  : Command()
 *    Receiver-->Sender : Ack()
 *  \enduml
 */
class Receiver
{
  public:
    /** Executable a command on the server */
    void Command(int commandId);
};
\endcode

<hr>
\section cmddotfile \\dotfile <file> ["caption"] [<sizeindication>=<size>]

  \addindex \\dotfile
  Inserts an image generated by dot from \<file\> into the documentation.

  The first argument specifies the file name of the image.
  doxygen will look for files in the paths (or files) that you specified
  after the \ref cfg_dotfile_dirs "DOTFILE_DIRS" tag.
  If the dot file is found it will be used as an input file to the dot tool.
  The resulting image will be put into the correct output directory.
  If the dot file name contains spaces you'll have to put quotes ("...") around it.

  The second argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  between quotes even if it does not contain any spaces. The quotes are
  stripped before the caption is displayed.

  The third argument is also optional and can be used to specify the
  width or height of the image.
  For a description of the possibilities see the paragraph
  \ref image_sizeindicator "Size indication" with the
  \ref cmdimage "\\image" command.

  \sa section \ref cmddot "\\dot".

<hr>
\section cmdmscfile \\mscfile <file> ["caption"] [<sizeindication>=<size>]

  \addindex \\mscfile
  Inserts an image generated by mscgen from \<file\> into the documentation.
  See http://www.mcternan.me.uk/mscgen/ for examples.

  The first argument specifies the file name of the image.
  doxygen will look for files in the paths (or files) that you specified
  after the \ref cfg_mscfile_dirs "MSCFILE_DIRS" tag.
  If the msc file is found it will be used as an input file to the built in mscgen tool.
  The resulting image will be put into the correct output directory.
  If the msc file name contains spaces you'll have to put quotes ("...") around it.

  The second argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  between quotes even if it does not contain any spaces. The quotes are
  stripped before the caption is displayed.

  The third argument is also optional and can be used to specify the
  width or height of the image.
  For a description of the possibilities see the paragraph
  \ref image_sizeindicator "Size indication" with the
  \ref cmdimage "\\image" command.

  \note The text fragment should include the part message of the
  sequence chart as well as the starting `msc {` and ending `}`
  (this is different from \ref cmdmsc "\\msc").

  \sa section \ref cmdmsc "\\msc".

<hr>
\section cmddiafile \\diafile <file> ["caption"] [<sizeindication>=<size>]

  \addindex \\diafile
  Inserts an image made in dia from \<file\> into the documentation.

  The first argument specifies the file name of the image.
  doxygen will look for files in the paths (or files) that you specified
  after the \ref cfg_diafile_dirs "DIAFILE_DIRS" tag.
  If the dia file is found it will be used as an input file dia.
  The resulting image will be put into the correct output directory.
  If the dia file name contains spaces you'll have to put quotes ("...") around it.

  The second argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  between quotes even if it does not contain any spaces. The quotes are
  stripped before the caption is displayed.

  The third argument is also optional and can be used to specify the
  width or height of the image.
  For a description of the possibilities see the paragraph
  \ref image_sizeindicator "Size indication" with the
  \ref cmdimage "\\image" command.

<hr>
\section cmde \\e <word>

  \addindex \\e
  Displays the argument \<word\> in italics.
  Use this command to emphasize words.

  \par Example:
  Typing:
  \verbatim
  ... this is a \e really good example ...
  \endverbatim
  will result in the following text:<br><br>
  ... this is a \e really good example ...

  Equivalent to \ref cmda "\\a" and \ref cmdem "\\em".
  To emphasize multiple words use \<em\>multiple words\</em\>.

<hr>
\section cmdem \\em <word>

  \addindex \\em
  Displays the argument \<word\> in italics.
  Use this command to emphasize words.

  \par Example:
  Typing:
  \verbatim
  ... this is a \em really good example ...
  \endverbatim
  will result in the following text:<br><br>
  ... this is a \em really good example ...

  Equivalent to \ref cmda "\\a" and \ref cmde "\\e".
  To emphasize multiple words use \<em\>multiple words\</em\>.

<hr>
\section cmdendcode \\endcode

  \addindex \\endcode
  Ends a block of code.
  \sa section \ref cmdcode "\\code"

<hr>
\section cmdenddocbookonly \\enddocbookonly

  \addindex \\enddocbookonly
  Ends a block of text that was started with a \ref cmddocbookonly "\\docbookonly" command.

  \sa section \ref cmddocbookonly "\\docbookonly".

<hr>
\section cmdenddot \\enddot

  \addindex \\enddot
  Ends a block that was started with \ref cmddot "\\dot".

<hr>
\section cmdendmsc \\endmsc

  \addindex \\endmsc
  Ends a block that was started with \ref cmdmsc "\\msc".

<hr>
\section cmdenduml \\enduml

  \addindex \\enduml
  Ends a block that was started with \ref cmdstartuml "\\startuml".

<hr>
\section cmdendhtmlonly \\endhtmlonly

  \addindex \\endhtmlonly
  Ends a block of text that was started with a \ref cmdhtmlonly "\\htmlonly" command.

  \sa section \ref cmdhtmlonly "\\htmlonly".

<hr>
\section cmdendlatexonly \\endlatexonly

  \addindex \\endlatexonly
  Ends a block of text that was started with a \ref cmdlatexonly "\\latexonly" command.

  \sa section \ref cmdlatexonly "\\latexonly".

<hr>
\section cmdendmanonly \\endmanonly

  \addindex \\endmanonly
  Ends a block of text that was started with a \ref cmdmanonly "\\manonly" command.

  \sa section \ref cmdmanonly "\\manonly".

<hr>
\section cmdendrtfonly \\endrtfonly

  \addindex \\endrtfonly
  Ends a block of text that was started with a \ref cmdrtfonly "\\rtfonly" command.

  \sa section \ref cmdrtfonly "\\rtfonly".


<hr>
\section cmdendverbatim \\endverbatim

  \addindex \\endverbatim
  Ends a block of text that was started with a \ref cmdverbatim "\\verbatim" command.

  \sa section \ref cmdverbatim "\\verbatim".

<hr>
\section cmdendxmlonly \\endxmlonly

  \addindex \\endxmlonly
  Ends a block of text that was started with a \ref cmdxmlonly "\\xmlonly" command.

  \sa section \ref cmdxmlonly "\\xmlonly".

<hr>
\section cmdfdollar \\f$

  \addindex \\f\$

  Marks the start and end of an in-text formula.
  \sa section \ref formulas "formulas" for an example.

<hr>
\section cmdfrndopen \\f(

  \addindex \\f(

  Marks the start of an in-text formula, but contrary to \ref cmdfdollar "\\f$" it will
  not explicitly open the math-mode in \LaTeX.
  \sa section \ref cmdfrndclose "\\f)" and section \ref formulas "formulas".

<hr>
\section cmdfrndclose \\f)

  \addindex \\f)

  Marks the end of an in-text formula started with \ref cmdfrndopen "\\f(".
  \sa section \ref cmdfrndopen "\\f(" and section \ref formulas "formulas".

<hr>
\section cmdfbropen \\f[

  \addindex \\f[

  Marks the start of a long formula that is displayed
  centered on a separate line.
  \sa section \ref cmdfbrclose "\\f]" and section \ref formulas "formulas".

<hr>
\section cmdfbrclose \\f]

  \addindex \\f]

  Marks the end of a long formula that is displayed
  centered on a separate line.
  \sa section \ref cmdfbropen "\\f[" and section \ref formulas "formulas".

<hr>
\section cmdfcurlyopen \\f{environment}{

  \addindex \\f{

  Marks the start of a formula that is in a specific environment.
  \note The second \c { is optional and is only to help editors (such as \c Vim) to
  do proper syntax highlighting by making the number of opening and closing braces
  the same.
  \sa section \ref cmdfcurlyclose "\\f}" and section \ref formulas "formulas".

<hr>
\section cmdfcurlyclose \\f}

  \addindex \\f}

  Marks the end of a formula that is in a specific environment.
  \sa section \ref cmdfcurlyopen "\\f{" and section \ref formulas "formulas".

<hr>
\section cmdhtmlonly \\htmlonly ["[block]"]

  \addindex \\htmlonly
  Starts a block of text that only will be verbatim included in the
  generated HTML documentation and tagged with `<htmlonly>` in the generated
  XML output. The block ends with a
  \ref cmdendhtmlonly "\\endhtmlonly" command.

  This command can be used to include HTML code that is too complex
  for doxygen (i.e. applets, java-scripts, and HTML tags that
  require specific attributes).

  Normally the contents between \ref cmdhtmlonly "\\htmlonly" and
  \ref cmdendhtmlonly "\\endhtmlonly" is inserted as-is. When you
  want to insert a HTML fragment that has block scope like a table or list
  which should appear outside \<p\>..\</p\>, this can lead to invalid HTML.
  You can use \\htmlonly[block] to make doxygen
  end the current paragraph and restart it after \\endhtmlonly.

  \note environment variables (like \$(HOME) ) are resolved inside a
  HTML-only block.

  \sa section \ref cmdmanonly "\\manonly",
              \ref cmdlatexonly "\\latexonly",
              \ref cmdrtfonly "\\rtfonly",
              \ref cmdxmlonly "\\xmlonly",
              \ref cmddocbookonly "\\docbookonly", and
              \ref cmdhtmlinclude "\\htmlinclude".

<hr>
\section cmdimage \\image['{'option'}'] <format> <file> ["caption"] [<sizeindication>=<size>]

  \addindex \\image
  Inserts an image into the documentation. This command is format
  specific, so if you want to insert an image for more than one
  format you'll have to repeat this command for each format.

  The first argument specifies the output format in which the image should
  be embedded. Currently, the following values are supported:
  \c html, \c latex, \c docbook and \c rtf.

  The second argument specifies the file name of the image.
  doxygen will look for files in the paths (or files) that you specified
  after the \ref cfg_image_path "IMAGE_PATH" tag.
  If the image is found it will be copied to the correct output directory.
  If the image name contains spaces you'll have to put quotes ("...") around
  the name. You can also specify an absolute URL instead of a file name, but then
  doxygen does not copy the image nor check its existence.

  The third argument is optional and can be used to specify the caption
  that is displayed below the image. This argument has to be specified
  on a single line and between quotes even if it does not contain any
  spaces. The quotes are stripped before the caption is displayed.

  The fourth argument is also optional and can be used to specify the
  width or height of the image. This can be useful for \LaTeX or DocBook output
  (i.e. format=<code>latex</code> or format=<code>docbook</code>).
  \anchor image_sizeindicator \par Size indication
  The \c sizeindication can specify the width or height to be used (or a combination).
  The size specifier in \LaTeX (for example `10cm` or
  `4in` or a symbolic width like `\textwidth`).

  Currently only the option `inline` is supported. In case the option `inline` is
  specified the image is placed "in the line", when a caption s present it is shown
  in HTML as tooltip (ignored for the other formats).

  Here is example of a comment block:

\verbatim
  /*! Here is a snapshot of my new application:
   *  \image html application.jpg
   *  \image latex application.eps "My application" width=10cm
   */
\endverbatim

  And this is an example of how the relevant part of the configuration file
  may look:

\verbatim
  IMAGE_PATH     = my_image_dir
\endverbatim

  \warning The image format for HTML is limited to what your
           browser supports.<br>For \LaTeX, the image format
           must be supported by the \LaTeX `\includegraphics` command i.e.
           Encapsulated PostScript (eps), Portable network graphics (png),
           Joint photographic experts group (jpg / jpeg).
           <br><br>
           Doxygen does not check if the image is in the correct format.
           So \e you have to make sure this is the case!

<hr>
\section cmdlatexonly \\latexonly

  \addindex \\latexonly
  Starts a block of text that only will be verbatim included in the
  generated \LaTeX documentation and tagged with `<latexonly>` in the generated
  XML output. The block ends with a
  \ref cmdendlatexonly "\\endlatexonly" command.

  This command can be used to include \LaTeX code that is too
  complex for doxygen (i.e. images, formulas, special characters). You can
  use the \ref cmdhtmlonly "\\htmlonly" and \ref cmdendhtmlonly "\\endhtmlonly"
  pair to provide a proper HTML alternative.

  \b Note:
    environment variables (like \$(HOME) ) are resolved inside a
    \LaTeX-only block.

  \sa sections \ref cmdrtfonly "\\rtfonly",
               \ref cmdxmlonly "\\xmlonly",
               \ref cmdmanonly "\\manonly",
               \ref cmdhtmlonly "\\htmlonly",
               \ref cmddocbookonly "\\docbookonly", and
               \ref cmdlatexinclude "\\latexinclude".

<hr>
\section cmdmanonly \\manonly

  \addindex \\manonly
  Starts a block of text that only will be verbatim included in the
  generated MAN documentation and tagged with `<manonly>` in the generated
  XML output. The block ends with a
  \ref cmdendmanonly "\\endmanonly" command.

  This command can be used to include groff code directly into
  MAN pages. You can use the \ref cmdhtmlonly "\\htmlonly" and
  \ref cmdendhtmlonly "\\endhtmlonly" and
  \ref cmdlatexonly "\\latexonly" and
  \ref cmdendlatexonly "\\endlatexonly" pairs to provide proper
  HTML and \LaTeX alternatives.

  \sa sections \ref cmdhtmlonly "\\htmlonly",
               \ref cmdxmlonly "\\xmlonly",
               \ref cmdrtfonly "\\rtfonly",
               \ref cmdlatexonly "\\latexonly",
               \ref cmddocbookonly "\\docbookonly" and
               \ref cmdmaninclude "\\maninclude".

<hr>
\section cmdli \\li { item-description }

  \addindex \\li
  This command has one argument that continues until the first
  blank line or until another \c \\li is encountered.
  The command can be used to generate a simple, not nested list of
  arguments.
  Each argument should start with a \c \\li command.

  \par Example:
  Typing:
  \verbatim
  \li \c AlignLeft left alignment.
  \li \c AlignCenter center alignment.
  \li \c AlignRight right alignment

  No other types of alignment are supported.
  \endverbatim
  will result in the following text:<br><br>
  <ul>
  <li> \c AlignLeft left alignment.
  <li> \c AlignCenter center alignment.
  <li> \c AlignRight right alignment
  </ul><br>
  No other types of alignment are supported.

  \par Note:
  For nested lists, HTML commands should be used.

  Equivalent to \ref cmdarg "\\arg"

<hr>
\section cmdn \\n

  \addindex \\n
  Forces a new line. Equivalent to \<br\> and inspired by
  the \c printf function.

<hr>
\section cmdp \\p <word>

  \addindex \\p
  Displays the parameter \<word\> using a typewriter font.
  You can use this command to refer to member function parameters in
  the running text.

  \par Example:
  \verbatim
  ... the \p x and \p y coordinates are used to ...
  \endverbatim
  This will result in the following text:<br><br>
  ... the \p x and \p y coordinates are used to ...

  Equivalent to \ref cmdc "\\c"
  To have multiple words in typewriter font use \<tt\>multiple words\</tt\>.

<hr>
\section cmdrtfonly \\rtfonly

  \addindex \\rtfonly
  Starts a block of text that only will be verbatim included in the
  generated RTF documentation and tagged with `<rtfonly>` in the generated
  XML output. The block ends with a
  \ref cmdendrtfonly "\\endrtfonly" command.

  This command can be used to include RTF code that is too complex
  for doxygen.

  \b Note:
    environment variables (like \$(HOME) ) are resolved inside a
    RTF-only block.

  \sa sections \ref cmdmanonly "\\manonly",
               \ref cmdxmlonly "\\xmlonly",
               \ref cmdlatexonly "\\latexonly",
               \ref cmdhtmlonly "\\htmlonly",
               \ref cmddocbookonly "\\docbookonly" and
               \ref cmdrtfinclude "\\rtfinclude".

<hr>
\section cmdverbatim \\verbatim

  \addindex \\verbatim
  Starts a block of text that will be verbatim included in
  the documentation. The block should end with a
  \ref cmdendverbatim "\\endverbatim" command.
  All commands are disabled in a verbatim block.

  \warning Make sure you include a \ref cmdendverbatim "\\endverbatim" command for each
  \c \\verbatim command or the parser will get confused!

  \sa sections \ref cmdcode "\\code",
               \ref cmdendverbatim "\\endverbatim" and
               \ref cmdverbinclude "\\verbinclude".

<hr>
\section cmdxmlonly \\xmlonly

  \addindex \\xmlonly
  Starts a block of text that only will be verbatim included in the
  generated XML output. The block ends with a
  \ref cmdendxmlonly "\\endxmlonly" command.

  This command can be used to include custom XML tags.

  \sa sections \ref cmdmanonly "\\manonly",
               \ref cmdrtfonly "\\rtfonly",
               \ref cmdlatexonly "\\latexonly",
               \ref cmdhtmlonly "\\htmlonly", and
               \ref cmddocbookonly "\\docbookonly".

<hr>
\section cmdbackslash \\\\

  \addindex \\\\
  This command writes a backslash character (\c \\) to the
  output. The backslash has to be escaped in some
  cases because doxygen uses it to detect commands.

<hr>
\section cmdat \\\@

  \addindex \\\@
  This command writes an at-sign (\c \@) to the output.
  The at-sign has to be escaped in some cases
  because doxygen uses it to detect Javadoc commands.

<hr>
\section cmdtilde \\~[LanguageId]
  \addindex \\~
  This command enables/disables a language specific filter. This can be
  used to put documentation for different language into one comment block
  and use the \ref cfg_output_language "OUTPUT_LANGUAGE" tag to filter out only a specific language.
  Use \c \\~language_id to enable output for a specific language only and
  \c \\~ to enable output for all languages (this is also the default mode).

  Example:
\verbatim
/*! \~english This is English \~dutch Dit is Nederlands \~german Dies ist
    Deutsch. \~ output for all languages.
 */
\endverbatim


<hr>
\section cmdamp \\\&

  \addindex \\\&
  This command writes the \c \& character to the output.
  This character has to be escaped because it has a special meaning in HTML.

<hr>
\section cmddollar \\\$

  \addindex \\\$
  This command writes the \c \$ character to the output.
  This character has to be escaped in some cases, because it is used to expand
  environment variables.

<hr>
\section cmdhash \\\#

  \addindex \\\#
  This command writes the \c \# character to the output. This
  character has to be escaped in some cases, because it is used to refer
  to documented entities.

<hr>
\section cmdlt \\\<

  \addindex \\\<
  This command writes the \c \< character to the output.
  This character has to be escaped because it has a special meaning in HTML.

<hr>
\section cmdgt \\\>

  \addindex \\\>
  This command writes the \c \> character to the output. This
  character has to be escaped because it has a special meaning in HTML.

<hr>
\section cmdperc \\\%

  \addindex \\\%
  This command writes the \c \% character to the output. This
  character has to be escaped in some cases, because it is used to
  prevent auto-linking to a word that is also a documented class or struct.

<hr>
\section cmdquot \\"

  \addindex \\\"
  This command writes the \c \" character to the output. This
  character has to be escaped in some cases, because it is used in pairs
  to indicate an unformatted text fragment.

<hr>
\section cmdchardot \\.

  \addindex \\\.
  This command writes a dot (`.`) to the output. This can be useful to
  prevent ending a brief description when \ref cfg_javadoc_autobrief "JAVADOC_AUTOBRIEF" is enabled
  or to prevent starting a numbered list when the dot follows a number at
  the start of a line.

<hr>
\section cmdeq \\=

  \addindex \\=
  This command writes an equal sign (`=`) to the output. This
  character sequence has to be escaped in some cases, because it is used
  in Markdown header processing.

<hr>
\section cmddcolon \\::

  \addindex \\::
  This command writes a double colon (\c \::) to the output. This
  character sequence has to be escaped in some cases, because it is used
  to reference to documented entities.

<hr>
\section cmdpipe \\|

  \addindex \\|
  This command writes a pipe symbol (\|) to the output. This
  character has to be escaped in some cases, because it is used
  for Markdown tables.

<hr>
\section cmdndash \\--

  \addindex \\\--
  This command writes two dashes (\--) to the output. This allows
  writing two consecutive dashes to the output instead of one n-dash character (--).

<hr>
\section cmdmdash \\---

  \addindex \\\---
  This command writes three dashes (\---) to the output. This allows
  writing three consecutive dashes to the output instead of one m-dash character (---).

<hr>
\htmlonly</p><center><p>\endhtmlonly
<h2>
\htmlonly --- \endhtmlonly
Commands included for Qt compatibility
\htmlonly --- \endhtmlonly
</h2>
\htmlonly</p></center><p>\endhtmlonly

The following commands are supported to remain compatible to the Qt class
browser generator. Do \e not use these commands in your own documentation.
<ul>
<li>\\annotatedclasslist
<li>\\classhierarchy
<li>\\define
<li>\\functionindex
<li>\\header
<li>\\headerfilelist
<li>\\inherit
<li>\\l
<li>\\postheader
</ul>
<hr>


\htmlonly
Go to the <a href="htmlcmds.html">next</a> section or return to the
 <a href="index.html">index</a>.
\endhtmlonly

*/