Consistency:
"Unix" ==> "\UNIX{}"
diff --git a/Doc/libcgi.tex b/Doc/libcgi.tex
index a414096..6b50ec8 100644
--- a/Doc/libcgi.tex
+++ b/Doc/libcgi.tex
@@ -263,7 +263,7 @@
installed; usually this is in a directory \file{cgi-bin} in the server tree.
Make sure that your script is readable and executable by ``others''; the
-Unix file mode should be 755 (use \code{chmod 755 filename}). Make sure
+\UNIX{} file mode should be 755 (use \code{chmod 755 filename}). Make sure
that the first line of the script contains \code{\#!} starting in column 1
followed by the pathname of the Python interpreter, for instance:
@@ -297,7 +297,7 @@
%
(This way, the directory inserted last will be searched first!)
-Instructions for non-Unix systems will vary; check your HTTP server's
+Instructions for non-\UNIX{} systems will vary; check your HTTP server's
documentation (it will usually have a section on CGI scripts).