Minor changes to match the style guide.
diff --git a/Doc/lib/libcgi.tex b/Doc/lib/libcgi.tex
index 56caab5..bbdafff 100644
--- a/Doc/lib/libcgi.tex
+++ b/Doc/lib/libcgi.tex
@@ -12,7 +12,7 @@
\index{URL}
-Support module for CGI (Common Gateway Interface) scripts.%
+Support module for Common Gateway Interface (CGI) scripts.%
\index{Common Gateway Interface}
This module defines a number of utilities for use by CGI scripts
@@ -294,7 +294,7 @@
\function{os.system()} or \function{os.popen()} functions. or others
with similar functionality), make very sure you don't pass arbitrary
strings received from the client to the shell. This is a well-known
-security hole whereby clever hackers anywhere on the web can exploit a
+security hole whereby clever hackers anywhere on the Web can exploit a
gullible CGI script to invoke arbitrary shell commands. Even parts of
the URL or field names cannot be trusted, since the request doesn't
have to come from your form!
@@ -330,7 +330,7 @@
(write, execute) files that everybody can read (write, execute). The
current directory at execution time is also different (it is usually
the server's cgi-bin directory) and the set of environment variables
-is also different from what you get at login. In particular, don't
+is also different from what you get when you log in. In particular, don't
count on the shell's search path for executables (\envvar{PATH}) or
the Python module search path (\envvar{PYTHONPATH}) to be set to
anything interesting.