Fix various warnings and issues in doxygen doc generation (#994)

* Fix various warnings and issues in doxygen doc generation

* Add new file to list

11 files changed, 110 insertions, 70 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c44c5d5..13f2e35 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -572,20 +572,6 @@ endif ()
 # endif ()
 
 #-----------------------------------------------------------------------------
-# Option to build documentation
-#-----------------------------------------------------------------------------
-option (HDF5_BUILD_DOC "Build documentation" OFF)
-if (HDF5_BUILD_DOC AND EXISTS "${HDF5_DOXYGEN_DIR}" AND IS_DIRECTORY "${HDF5_DOXYGEN_DIR}")
-# check if Doxygen is installed
-  find_package(Doxygen)
-  if (DOXYGEN_FOUND)
-    message(STATUS "Doxygen version: ${DOXYGEN_VERSION}")
-  else ()
-    message(STATUS "Doxygen needs to be installed to generate the doxygen documentation")
-  endif ()
-endif ()
-
-#-----------------------------------------------------------------------------
 # Option to indicate using a memory checker
 #-----------------------------------------------------------------------------
 option (HDF5_ENABLE_USING_MEMCHECKER "Indicate that a memory checker is used" OFF)
@@ -926,6 +912,21 @@ if (HDF5_ALLOW_EXTERNAL_SUPPORT MATCHES "GIT" OR HDF5_ALLOW_EXTERNAL_SUPPORT MAT
 endif ()
 
 #-----------------------------------------------------------------------------
+# Option to build documentation
+#-----------------------------------------------------------------------------
+option (HDF5_BUILD_DOC "Build documentation" OFF)
+if (HDF5_BUILD_DOC AND EXISTS "${HDF5_DOXYGEN_DIR}" AND IS_DIRECTORY "${HDF5_DOXYGEN_DIR}")
+# check if Doxygen is installed
+  find_package(Doxygen)
+  if (DOXYGEN_FOUND)
+    message(STATUS "Doxygen version: ${DOXYGEN_VERSION}")
+    add_subdirectory (doxygen)
+  else ()
+    message(STATUS "Doxygen needs to be installed to generate the doxygen documentation")
+  endif ()
+endif ()
+
+#-----------------------------------------------------------------------------
 # Dashboard and Testing Settings
 #-----------------------------------------------------------------------------
 option (BUILD_TESTING "Build HDF5 Unit Testing" ON)
diff --git a/MANIFEST b/MANIFEST
index ce9776e..0782b22 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -212,6 +212,7 @@
 ./doc/code-conventions.md
 ./doc/contributing.md
 ./doxygen/aliases
+./doxygen/CMakeLists.txt
 ./doxygen/Doxyfile.in
 ./doxygen/dox/APIVersions.dox
 ./doxygen/dox/About.dox
diff --git a/configure.ac b/configure.ac
index fcb2924..bc2358f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1106,6 +1106,7 @@ if test "X$HDF5_DOXYGEN" = "Xyes"; then
   AC_SUBST([DOXYGEN_SERVER_BASED_SEARCH])
   AC_SUBST([DOXYGEN_EXTERNAL_SEARCH])
   AC_SUBST([DOXYGEN_SEARCHENGINE_URL])
+  AC_SUBST([DOXYGEN_STRIP_FROM_PATH])
   AC_SUBST([DOXYGEN_PREDEFINED])
 
 # SRCDIR Environment variables used inside doxygen macro for the source location:
@@ -1113,7 +1114,7 @@ if test "X$HDF5_DOXYGEN" = "Xyes"; then
   DOXYGEN_VERSION_STRING=${PACKAGE_VERSION}
   DOXYGEN_INCLUDE_ALIASES='$(SRCDIR)/doxygen/aliases'
   DOXYGEN_PROJECT_LOGO='$(SRCDIR)/doxygen/img/HDFG-logo.png'
-  DOXYGEN_PROJECT_BRIEF=
+  DOXYGEN_PROJECT_BRIEF='C-API Reference'
   DOXYGEN_INPUT_DIRECTORY='$(SRCDIR) $(SRCDIR)/doxygen/dox'
   DOXYGEN_OPTIMIZE_OUTPUT_FOR_C=YES
   DOXYGEN_MACRO_EXPANSION=YES
@@ -1128,6 +1129,7 @@ if test "X$HDF5_DOXYGEN" = "Xyes"; then
   DOXYGEN_SERVER_BASED_SEARCH=NO
   DOXYGEN_EXTERNAL_SEARCH=NO
   DOXYGEN_SEARCHENGINE_URL=
+  DOXYGEN_STRIP_FROM_PATH='$(SRCDIR)'
   DOXYGEN_PREDEFINED='H5_HAVE_DIRECT H5_HAVE_LIBHDFS H5_HAVE_MAP_API H5_HAVE_PARALLEL H5_HAVE_ROS3_VFD'
 
   DX_INIT_DOXYGEN([HDF5], [./doxygen/Doxyfile], [hdf5lib_docs])
diff --git a/doxygen/CMakeLists.txt b/doxygen/CMakeLists.txt
new file mode 100644
index 0000000..36ce590
--- /dev/null
+++ b/doxygen/CMakeLists.txt
@@ -0,0 +1,46 @@
+cmake_minimum_required (VERSION 3.12)
+project (HDF5_DOXYGEN C)
+
+#-----------------------------------------------------------------------------
+# Option to build documentation
+#-----------------------------------------------------------------------------
+if (DOXYGEN_FOUND)
+  set (DOXYGEN_PACKAGE ${HDF5_PACKAGE_NAME})
+  set (DOXYGEN_VERSION_STRING ${HDF5_PACKAGE_VERSION_STRING})
+  set (DOXYGEN_INCLUDE_ALIASES_PATH ${HDF5_DOXYGEN_DIR})
+  set (DOXYGEN_INCLUDE_ALIASES aliases)
+  set (DOXYGEN_VERBATIM_VARS DOXYGEN_INCLUDE_ALIASES)
+  set (DOXYGEN_PROJECT_LOGO ${HDF5_DOXYGEN_DIR}/img/HDFG-logo.png)
+  set (DOXYGEN_PROJECT_BRIEF "C-API Reference")
+  set (DOXYGEN_INPUT_DIRECTORY "${HDF5_SOURCE_DIR} ${HDF5_DOXYGEN_DIR}/dox ${HDF5_GENERATED_SOURCE_DIR}")
+  set (DOXYGEN_OPTIMIZE_OUTPUT_FOR_C YES)
+  set (DOXYGEN_MACRO_EXPANSION YES)
+  set (DOXYGEN_OUTPUT_DIRECTORY ${HDF5_BINARY_DIR}/hdf5lib_docs)
+  set (DOXYGEN_EXAMPLES_DIRECTORY "${HDF5_DOXYGEN_DIR}/dox/cookbook ${HDF5_DOXYGEN_DIR}/examples ${HDF5_SRC_DIR} ${HDF5_SOURCE_DIR}/examples ${HDF5_TEST_SRC_DIR}")
+  set (DOXYGEN_LAYOUT_FILE ${HDF5_DOXYGEN_DIR}/hdf5doxy_layout.xml)
+  set (DOXYGEN_HTML_HEADER ${HDF5_DOXYGEN_DIR}/hdf5_header.html)
+  set (DOXYGEN_HTML_FOOTER ${HDF5_DOXYGEN_DIR}/hdf5_footer.html)
+  set (DOXYGEN_HTML_EXTRA_STYLESHEET ${HDF5_DOXYGEN_DIR}/hdf5doxy.css)
+  set (DOXYGEN_HTML_EXTRA_FILES "${HDF5_DOXYGEN_DIR}/hdf5_navtree_hacks.js ${HDF5_DOXYGEN_DIR}/img/ftv2node.png ${HDF5_DOXYGEN_DIR}/img/ftv2pnode.png")
+  set (DOXYGEN_TAG_FILE ${HDF5_BINARY_DIR}/hdf5.tag)
+  set (DOXYGEN_SERVER_BASED_SEARCH NO)
+  set (DOXYGEN_EXTERNAL_SEARCH NO)
+  set (DOXYGEN_SEARCHENGINE_URL)
+  set (DOXYGEN_STRIP_FROM_PATH ${HDF5_SOURCE_DIR})
+  set (DOXYGEN_PREDEFINED "H5_HAVE_DIRECT H5_HAVE_LIBHDFS H5_HAVE_MAP_API H5_HAVE_PARALLEL H5_HAVE_ROS3_VFD")
+
+# This configure and individual custom targets work together
+  # Replace variables inside @@ with the current values
+  configure_file (${HDF5_DOXYGEN_DIR}/Doxyfile.in ${HDF5_BINARY_DIR}/Doxyfile @ONLY)
+
+  install (
+      DIRECTORY ${HDF5_BINARY_DIR}/hdf5lib_docs/html
+      DESTINATION ${HDF5_INSTALL_DATA_DIR}
+      COMPONENT Documents
+  )
+
+  if (NOT TARGET doxygen)
+    add_custom_target (doxygen)
+  endif ()
+
+endif ()
diff --git a/doxygen/Doxyfile.in b/doxygen/Doxyfile.in
index 4af590b..44d9974 100644
--- a/doxygen/Doxyfile.in
+++ b/doxygen/Doxyfile.in
@@ -170,7 +170,7 @@ FULL_PATH_NAMES        = YES
 # will be relative from the directory where doxygen is started.
 # This tag requires that the tag FULL_PATH_NAMES is set to YES.
 
-STRIP_FROM_PATH        =
+STRIP_FROM_PATH        = @DOXYGEN_STRIP_FROM_PATH@
 
 # The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
 # path mentioned in the documentation of a class, which tells the reader which
@@ -1126,13 +1126,6 @@ CLANG_DATABASE_PATH    =
 
 ALPHABETICAL_INDEX     = YES
 
-# The COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in
-# which the alphabetical index list will be split.
-# Minimum value: 1, maximum value: 20, default value: 5.
-# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.
-
-COLS_IN_ALPHA_INDEX    = 5
-
 # In case all classes in a project start with a common prefix, all classes will
 # be put under the same header in the alphabetical index. The IGNORE_PREFIX tag
 # can be used to specify a prefix (or a list of prefixes) that should be ignored
diff --git a/doxygen/aliases b/doxygen/aliases
index ab6d8ea..06c3445 100644
--- a/doxygen/aliases
+++ b/doxygen/aliases
@@ -298,7 +298,7 @@ ALIASES += ref_rfc20120305="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/RFC%20P
 ALIASES += ref_rfc20120220="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/h5repack_improve_hyperslab_over_chunked_dataset_v1.pdf\"><tt>h5repack</tt>: Improved Hyperslab selections for Large Chunked Datasets</a>"
 ALIASES += ref_rfc20120120="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/2012-1-25-Maintainers-guide-for-datatype.docx.pdf\">A Maintainer’s Guide for the Datatype Module in HDF5 Library</a>"
 ALIASES += ref_rfc20120104="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/RFC_actual_io_v4-1_done.docx.pdf\">Actual I/O Mode</a>"
-ALIASES += ref_rfc20111119="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/RFC-H5Ocompare-review_v6.pdf\">New	public functions to	handle comparison</a>"
+ALIASES += ref_rfc20111119="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/RFC-H5Ocompare-review_v6.pdf\">New    public functions to    handle comparison</a>"
 ALIASES += ref_rfc20110825="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/2011-08-31-RFC_H5Ocopy_Named_DT_v2.docx.pdf\">Merging Named Datatypes in H5Ocopy()</a>"
 ALIASES += ref_rfc20110811="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/RFC_Enhancement_Hyperslab_Selection-1.4.docx.pdf\">Expanding the HDF5 Hyperslab Selection Interface</a>"
 ALIASES += ref_rfc20110726="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/metadata_aggregation_RFC_v03.docx.pdf\">HDF5 File Space Allocation and Aggregation</a>"
@@ -327,7 +327,7 @@ ALIASES += ref_rfc20071111="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/AURA-co
 ALIASES += ref_rfc20071018="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/RFC_NaNsHDF5.pdf\"><tt>NaN</tt> detection in HDF5</a>"
 ALIASES += ref_rfc20070801="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/Metadata_Journaling_RFC.pdf\">Metadata Journaling to Improve Crash Survivability</a>"
 ALIASES += ref_rfc20070413="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/API_Compatibility_RFC.txt.pdf\">API Compatibility Strategies for HDF5</a>"
-ALIASES += ref_rfc20070115="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/PrivateHeap.pdf\">A "Private" Heap for HDF5</a>"
+ALIASES += ref_rfc20070115="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/PrivateHeap.pdf\">A 'Private' Heap for HDF5</a>"
 ALIASES += ref_rfc20060623="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/coll_ind_dd6.pdf\">Performance Comparison of Collective I/O and Independent I/O with Derived Datatypes</a>"
 ALIASES += ref_rfc20060604="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/h5stat_spec_v3_2006-06-04.pdf\"><tt>h5stat</tt> tool</a>"
 ALIASES += ref_rfc20060505="<a href=\"https://docs.hdfgroup.org/hdf5/rfc/Simple%20Performance%20Test%20on%20Fletcher32%20Filter.pdf\">Simple Performance Test on Fletcher32 Filter</a>"
diff --git a/doxygen/dox/MetadataCachingInHDF5.dox b/doxygen/dox/MetadataCachingInHDF5.dox
index 9ba0fab..b84ddea 100644
--- a/doxygen/dox/MetadataCachingInHDF5.dox
+++ b/doxygen/dox/MetadataCachingInHDF5.dox
@@ -668,7 +668,7 @@ reduction.
 With the hit rate threshold cache size decrement algorithm, the remaining fields
 in the section are ignored.
 
-\subsubsection acsr Ageout Cache Size Reduction
+\subsubsection dacsr Ageout Cache Size Reduction
 
 If \ref H5AC_cache_config_t.decr_mode "decr_mode" is #H5C_decr__age_out the
 cache size is decreased by the ageout algorithm, and the remaining fields of the
@@ -692,7 +692,7 @@ The \ref H5AC_cache_config_t.decrement "decrement" and \ref
 H5AC_cache_config_t.upper_hr_threshold "upper_hr_threshold" fields are ignored
 in this case.
 
-\subsubsection awhrtcsr Ageout With Hit Rate Threshold Cache Size Reduction
+\subsubsection dawhrtcsr Ageout With Hit Rate Threshold Cache Size Reduction
 
 If \ref H5AC_cache_config_t.decr_mode "decr_mode" is
 #H5C_decr__age_out_with_threshold, the cache size is decreased by the ageout
diff --git a/hl/src/CMakeLists.txt b/hl/src/CMakeLists.txt
index 7678de8..a97d6fa 100644
--- a/hl/src/CMakeLists.txt
+++ b/hl/src/CMakeLists.txt
@@ -169,3 +169,32 @@ if (NOT WIN32 AND NOT MINGW)
       COMPONENT hllibraries
   )
 endif ()
+
+#-----------------------------------------------------------------------------
+# Option to build documentation
+#-----------------------------------------------------------------------------
+if (DOXYGEN_FOUND)
+# This cmake function requires that the non-default doxyfile settings are provided with set (DOXYGEN_xxx) commands
+# In addition the doxyfile aliases @INCLUDE option is not supported and would need to be provided in a set (DOXYGEN_ALIASES) command.
+#  doxygen_add_docs (hdf5lib_doc
+##      ${HL_SOURCES} ${HL_HEADERS} ${HDF5_DOXYGEN_DIR}/dox
+#      ${DOXYGEN_INPUT_DIRECTORY}
+#      ALL
+#      WORKING_DIRECTORY ${HDF5_HL_SRC_DIR}
+#      COMMENT "Generating HDF5 HL library Source Documentation"
+#  )
+
+# This custom target and doxygen/configure work together
+  # Replace variables inside @@ with the current values
+  add_custom_target (hdf5hllib_doc ALL
+        COMMAND ${DOXYGEN_EXECUTABLE} ${HDF5_BINARY_DIR}/Doxyfile
+        WORKING_DIRECTORY ${HDF5_HL_SRC_DIR}
+        COMMENT "Generating HDF5 HL library Source API documentation with Doxygen"
+        VERBATIM )
+
+  if (NOT TARGET doxygen)
+    add_custom_target (doxygen)
+  endif ()
+
+  add_dependencies (doxygen hdf5hllib_doc)
+endif ()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d1d848d..cde36c9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1399,38 +1399,6 @@ endif ()
 # Option to build documentation
 #-----------------------------------------------------------------------------
 if (DOXYGEN_FOUND)
-  set (DOXYGEN_PACKAGE ${HDF5_PACKAGE_NAME})
-  set (DOXYGEN_VERSION_STRING ${HDF5_PACKAGE_VERSION_STRING})
-  set (DOXYGEN_INCLUDE_ALIASES_PATH ${HDF5_DOXYGEN_DIR})
-  set (DOXYGEN_INCLUDE_ALIASES aliases)
-  set (DOXYGEN_VERBATIM_VARS DOXYGEN_INCLUDE_ALIASES)
-  set (DOXYGEN_PROJECT_LOGO ${HDF5_DOXYGEN_DIR}/img/HDFG-logo.png)
-  set (DOXYGEN_PROJECT_BRIEF "C-API Reference")
-  set (DOXYGEN_INPUT_DIRECTORY "${HDF5_SRC_DIR} ${HDF5_DOXYGEN_DIR}/dox ${HDF5_GENERATED_SOURCE_DIR}")
-  set (DOXYGEN_OPTIMIZE_OUTPUT_FOR_C YES)
-  set (DOXYGEN_MACRO_EXPANSION YES)
-  set (DOXYGEN_OUTPUT_DIRECTORY ${HDF5_BINARY_DIR}/hdf5lib_docs)
-  set (DOXYGEN_EXAMPLES_DIRECTORY "${HDF5_DOXYGEN_DIR}/dox/cookbook ${HDF5_DOXYGEN_DIR}/examples ${HDF5_SRC_DIR} ${HDF5_SOURCE_DIR}/examples ${HDF5_TEST_SRC_DIR}")
-  set (DOXYGEN_LAYOUT_FILE ${HDF5_DOXYGEN_DIR}/hdf5doxy_layout.xml)
-  set (DOXYGEN_HTML_HEADER ${HDF5_DOXYGEN_DIR}/hdf5_header.html)
-  set (DOXYGEN_HTML_FOOTER ${HDF5_DOXYGEN_DIR}/hdf5_footer.html)
-  set (DOXYGEN_HTML_EXTRA_STYLESHEET ${HDF5_DOXYGEN_DIR}/hdf5doxy.css)
-  set (DOXYGEN_HTML_EXTRA_FILES "${HDF5_DOXYGEN_DIR}/hdf5_navtree_hacks.js ${HDF5_DOXYGEN_DIR}/img/ftv2node.png ${HDF5_DOXYGEN_DIR}/img/ftv2pnode.png")
-  set (DOXYGEN_TAG_FILE ${HDF5_BINARY_DIR}/hdf5.tag)
-  set (DOXYGEN_SERVER_BASED_SEARCH NO)
-  set (DOXYGEN_EXTERNAL_SEARCH NO)
-  set (DOXYGEN_SEARCHENGINE_URL)
-  set (DOXYGEN_PREDEFINED H5_HAVE_DIRECT H5_HAVE_LIBHDFS H5_HAVE_MAP_API H5_HAVE_PARALLEL H5_HAVE_ROS3_VFD)
-
-# This configure and custom target work together
-  # Replace variables inside @@ with the current values
-  configure_file (${HDF5_DOXYGEN_DIR}/Doxyfile.in ${HDF5_BINARY_DIR}/Doxyfile @ONLY)
-  add_custom_target (hdf5lib_doc ALL
-        COMMAND ${DOXYGEN_EXECUTABLE} ${HDF5_BINARY_DIR}/Doxyfile
-        DEPENDS ${HDF5_GENERATED_SOURCE_DIR}/H5Tinit.c ${HDF5_SRC_BINARY_DIR}/H5lib_settings.c
-        WORKING_DIRECTORY ${HDF5_SRC_DIR}
-        COMMENT "Generating HDF5 library Source API documentation with Doxygen"
-        VERBATIM )
 # This cmake function requires that the non-default doxyfile settings are provided with set (DOXYGEN_xxx) commands
 # In addition the doxyfile aliases @INCLUDE option is not supported and would need to be provided in a set (DOXYGEN_ALIASES) command.
 #  doxygen_add_docs (hdf5lib_doc
@@ -1440,11 +1408,15 @@ if (DOXYGEN_FOUND)
 #      WORKING_DIRECTORY ${HDF5_SRC_DIR}
 #      COMMENT "Generating HDF5 library Source Documentation"
 #  )
-  install (
-      DIRECTORY ${HDF5_BINARY_DIR}/hdf5lib_docs/html
-      DESTINATION ${HDF5_INSTALL_DATA_DIR}
-      COMPONENT Documents
-  )
+
+# This custom target and doxygen/configure work together
+  # Replace variables inside @@ with the current values
+  add_custom_target (hdf5lib_doc ALL
+        COMMAND ${DOXYGEN_EXECUTABLE} ${HDF5_BINARY_DIR}/Doxyfile
+        DEPENDS ${HDF5_GENERATED_SOURCE_DIR}/H5Tinit.c ${HDF5_SRC_BINARY_DIR}/H5lib_settings.c
+        WORKING_DIRECTORY ${HDF5_SRC_DIR}
+        COMMENT "Generating HDF5 library Source API documentation with Doxygen"
+        VERBATIM )
 
   if (NOT TARGET doxygen)
     add_custom_target (doxygen)
diff --git a/src/H5Dpublic.h b/src/H5Dpublic.h
index 8fe8020..c496414 100644
--- a/src/H5Dpublic.h
+++ b/src/H5Dpublic.h
@@ -152,7 +152,7 @@ typedef herr_t (*H5D_append_cb_t)(hid_t dataset_id, hsize_t *cur_dims, void *op_
  *
  * \param[in,out] elem Pointer to the memory buffer containing the current dataset
  *                     element
- * \param[in] type_id Datatype identifier of the elements stored in \pelem
+ * \param[in] type_id Datatype identifier of the elements stored in \p elem
  * \param[in] ndim Number of dimensions for the \p point array
  * \param[in] point Array containing the location of the element within
  *                  the original dataspace
diff --git a/src/H5Ppublic.h b/src/H5Ppublic.h
index 5e9c4ab..a5c5c37 100644
--- a/src/H5Ppublic.h
+++ b/src/H5Ppublic.h
@@ -7486,10 +7486,6 @@ H5_DLL size_t H5Pget_buffer(hid_t plist_id, void **tconv /*out*/, void **bkg /*o
  *          If an error occurs, the buffer pointed to by \p expression is
  *          unchanged, and the function returns a negative value.
  *
- * \par Example
- *      An example snippet from examples/h5_dtransform.c:
- *      \snippet h5_dtransform.c H5Pget_data_transform_snip
- *
  * \since 1.8.0
  *
  */
@@ -8092,7 +8088,7 @@ H5_DLL herr_t H5Pget_mpio_no_collective_cause(hid_t plist_id, uint32_t *local_no
  *          the size of the \p start, \p stride, \p count, and \p block arrays.
  *          \p rank must be between 1 and #H5S_MAX_RANK, inclusive.
  *
- *          The \op, \p start, \p stride, \p count, and \p block parameters
+ *          The \p op, \p start, \p stride, \p count, and \p block parameters
  *          behave identically to their behavior for H5Sselect_hyperslab(),
  *          please see the documentation for that routine for details about
  *          their use.