Index: Doc/lib/libbisect.tex
===================================================================
--- Doc/lib/libbisect.tex	(revision 43500)
+++ Doc/lib/libbisect.tex	(working copy)
@@ -19,11 +19,13 @@
 
 The following functions are provided:
 
-\begin{funcdesc}{bisect_left}{list, item\optional{, lo\optional{, hi}}}
+\begin{funcdesc}{bisect_left}{list, item\optional{, lo\optional{, hi\optional{,comp}}}
   Locate the proper insertion point for \var{item} in \var{list} to
   maintain sorted order.  The parameters \var{lo} and \var{hi} may be
   used to specify a subset of the list which should be considered; by
-  default the entire list is used.  If \var{item} is already present
+  default the entire list is used. \var{comp} is a custom comparison
+  function, which defaults to the built-in function \var{cmp}.
+   If \var{item} is already present
   in \var{list}, the insertion point will be before (to the left of)
   any existing entries.  The return value is suitable for use as the
   first parameter to \code{\var{list}.insert()}.  This assumes that
@@ -31,7 +33,7 @@
 \versionadded{2.1}
 \end{funcdesc}
 
-\begin{funcdesc}{bisect_right}{list, item\optional{, lo\optional{, hi}}}
+\begin{funcdesc}{bisect_right}{list, item\optional{, lo\optional{, hi\optional{, comp}}}}
   Similar to \function{bisect_left()}, but returns an insertion point
   which comes after (to the right of) any existing entries of
   \var{item} in \var{list}.
@@ -42,7 +44,7 @@
   Alias for \function{bisect_right()}.
 \end{funcdesc}
 
-\begin{funcdesc}{insort_left}{list, item\optional{, lo\optional{, hi}}}
+\begin{funcdesc}{insort_left}{list, item\optional{, lo\optional{, hi\optional{, comp}}}}
   Insert \var{item} in \var{list} in sorted order.  This is equivalent
   to \code{\var{list}.insert(bisect.bisect_left(\var{list}, \var{item},
   \var{lo}, \var{hi}), \var{item})}.  This assumes that \var{list} is
@@ -50,7 +52,7 @@
 \versionadded{2.1}
 \end{funcdesc}
 
-\begin{funcdesc}{insort_right}{list, item\optional{, lo\optional{, hi}}}
+\begin{funcdesc}{insort_right}{list, item\optional{, lo\optional{, hi\optional{, comp}}}}
   Similar to \function{insort_left()}, but inserting \var{item} in
   \var{list} after any existing entries of \var{item}.
 \versionadded{2.1}