ConfigParser.optionxform(): Document this since it is available for
sub-classes and application code to override.
diff --git a/Doc/lib/libcfgparser.tex b/Doc/lib/libcfgparser.tex
index fc2d1c1..65c27ce 100644
--- a/Doc/lib/libcfgparser.tex
+++ b/Doc/lib/libcfgparser.tex
@@ -97,6 +97,7 @@
for application configuration files.}
\end{seealso}
+
\subsection{ConfigParser Objects \label{ConfigParser-objects}}
\class{ConfigParser} instances have the following methods:
@@ -189,3 +190,12 @@
If the section in fact existed, return 1. Otherwise return 0.
\end{methoddesc}
+\begin{methoddesc}{optionxform}{option}
+Transforms the option name \var{option} as found in an input file or
+as passed in by client code to the form that should be used in the
+internal structures. The default implementation returns a lower-case
+version of \var{option}; subclasses may override this or client code
+can set an attribute of this name on instances to affect this
+behavior. Setting this to \function{str()}, for example, would make
+option names case sensitive.
+\end{methoddesc}