Index: trunk/doc/pslib/psLibSDRS.tex
===================================================================
--- trunk/doc/pslib/psLibSDRS.tex	(revision 12382)
+++ trunk/doc/pslib/psLibSDRS.tex	(revision 23304)
@@ -1197,4 +1197,12 @@
 while returning the type involves descending through a case statement.
 
+To compare the types of two pointers without knowing their types, the following function may be used:
+
+\begin{prototype}
+bool psMemTypeEqual (void *ptr1, ///< pointer to first psMemory object
+		     void *ptr2 ///< pointer to second psMemory object
+  );
+\end{prototype}
+
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