Use \url{} to mark URLs, \email{} to mark an email address.

Doc/lib/libcrypto.tex

@@ -23,8 +23,8 @@ written by Andrew Kuchling of further interest; the package adds
 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}

Doc/libcrypto.tex

@@ -23,8 +23,8 @@ written by Andrew Kuchling of further interest; the package adds
 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}