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-\section{Standard Module \module{Bastion}}
-\label{module-Bastion}
-\stmodindex{Bastion}
-
-% I'm concerned that the word 'bastion' won't be understood by people
-% for whom English is a second language, making the module name
-% somewhat mysterious.  Thus, the brief definition... --amk
-
-According to the dictionary, a bastion is ``a fortified area or
-position'', or ``something that is considered a stronghold.''  It's a
-suitable name for this module, which provides a way to forbid access
-to certain attributes of an object.  It must always be used with the
-\module{rexec} module, in order to allow restricted-mode programs access
-to certain safe attributes of an object, while denying access to
-other, unsafe attributes.
-
-% I've punted on the issue of documenting keyword arguments for now.
-
-\begin{funcdesc}{Bastion}{object\optional{, filter\optional{,
-                          name\optional{, class}}}}
-Protect the object \var{object}, returning a bastion for the
-object.  Any attempt to access one of the object's attributes will
-have to be approved by the \var{filter} function; if the access is
-denied an \exception{AttributeError} exception will be raised.
-
-If present, \var{filter} must be a function that accepts a string
-containing an attribute name, and returns true if access to that
-attribute will be permitted; if \var{filter} returns false, the access
-is denied.  The default filter denies access to any function beginning
-with an underscore (\samp{_}).  The bastion's string representation
-will be \samp{<Bastion for \var{name}>} if a value for
-\var{name} is provided; otherwise, \samp{repr(\var{object})} will be
-used.
-
-\var{class}, if present, should be a subclass of \class{BastionClass}; 
-see the code in \file{bastion.py} for the details.  Overriding the
-default \class{BastionClass} will rarely be required.
-\end{funcdesc}
-
-
-\begin{classdesc}{BastionClass}{getfunc, name}
-Class which actually implements bastion objects.  This is the default
-class used by \function{Bastion()}.  The \var{getfunc} parameter is a
-function which returns the value of an attribute which should be
-exposed to the restricted execution environment when called with the
-name of the attribute as the only parameter.  \var{name} is used to
-construct the \function{repr()} of the \class{BastionClass} instance.
-\end{classdesc}