Use \url{} to mark URLs, \email{} to mark an email address.
diff --git a/Doc/libcrypto.tex b/Doc/libcrypto.tex
index 59734ba..ab40819 100644
--- a/Doc/libcrypto.tex
+++ b/Doc/libcrypto.tex
@@ -23,8 +23,8 @@
built-in modules for DES and IDEA encryption, provides a Python module
for reading and decrypting PGP files, and then some. These modules
are not distributed with Python but available separately. See the URL
-\file{http://www.magnet.com/\~amk/python/pct.html} or send email to
-\file{amk@magnet.com} for more information.
+\url{http://www.magnet.com/\~amk/python/pct.html} or send email to
+\email{amk@magnet.com} for more information.
\index{PGP}
\indexii{DES}{cipher}
\indexii{IDEA}{cipher}