Added some module references to the index.
diff --git a/Doc/libmac.tex b/Doc/libmac.tex
index 270620a..3a1b5ee 100644
--- a/Doc/libmac.tex
+++ b/Doc/libmac.tex
@@ -40,6 +40,8 @@
functionality provided by the optional built-in module \code{posix}.
It is best accessed through the more portable standard module
\code{os}.
+\refbimodindex{posix}
+\refstmodindex{os}
The following functions are available in this module:
\code{chdir},
@@ -59,11 +61,11 @@
\code{unlink},
\code{write},
as well as the exception \code{error}. Note that the times returned by
-\code{stat} are floating-point values, like all time values in
+\code{stat()} are floating-point values, like all time values in
MacPython.
-One additional function is available: \code{xstat}. This function
-returns the same information as \code{stat}, but with three extra
+One additional function is available: \code{xstat()}. This function
+returns the same information as \code{stat()}, but with three extra
values appended: the size of the resource fork of the file and its
4-char creator and type.
@@ -74,6 +76,8 @@
available from the optional standard module \code{posixpath}. It is
best accessed through the more portable standard module \code{os}, as
\code{os.path}.
+\refstmodindex{posixpath}
+\refstmodindex{os}
The following functions are available in this module:
\code{normcase},