+.TP 13
+.I SUBJECT
+Set the subject of the messages you send
+.TP 13
+.I TEXT
+Set the body text of the messages
+
+.SH FILES
+The behavior of
+.B gpg-mailkeys
+can be updated through some files available in the user home directory.
+
+Thus,
+.B .gpg-mailkeysrc
+allows the user to overwrite the default value for the above environment
+variables, and any text in
+.B .signature
+will be appended to the end of the body text of the message.
+