Minor revisions similar to some information in the new docstrings.
diff --git a/Doc/lib/libgrp.tex b/Doc/lib/libgrp.tex
index 2925297..8286081 100644
--- a/Doc/lib/libgrp.tex
+++ b/Doc/lib/libgrp.tex
@@ -22,17 +22,19 @@
The gid is an integer, name and password are strings, and the member
list is a list of strings.
(Note that most users are not explicitly listed as members of the
-group they are in according to the password database.)
-\exception{KeyError} is raised if the entry asked for cannot be found.
+group they are in according to the password database. Check both
+databases to get complete membership information.)
It defines the following items:
\begin{funcdesc}{getgrgid}{gid}
Return the group database entry for the given numeric group ID.
+\exception{KeyError} is raised if the entry asked for cannot be found.
\end{funcdesc}
\begin{funcdesc}{getgrnam}{name}
Return the group database entry for the given group name.
+\exception{KeyError} is raised if the entry asked for cannot be found.
\end{funcdesc}
\begin{funcdesc}{getgrall}{}