From Linux Security: "The purpose of this document is to demonstrate the steps necessary to set up GnuPG and use it with Pine, a popular mail and news client. I will not go
into very much detail about the usage and responsability aspects of GnuPG (please refer to the References section for links). I will, however, go into
enough detail to ensure that a reader is familiar with the relevant concepts required for sending and receiving PGP signed/encrypted e-mail."
April 12, 2001