+(defcustom pgp-version 'pgp
+ "Version of PGP or GnuPG command to be used for encryption or sign.
+The value should be a symbol. Allowed versions are:
+
+ gpg - GnuPG.
+ pgp50 - PGP version 5.0i.
+ pgp - PGP version 2.6."
+ :group 'mime
+ :type '(radio (choice-item :tag "GnuPG" gpg)
+ (choice-item :tag "PGP 5.0i" pgp50)
+ (choice-item :tag "PGP 2.6" pgp)))
+