=head1 DESCRIPTION
All of the functions described on this page that have a I<TYPE> of B<DH>, B<DSA>
-and B<RSA> are deprecated. Applications should use OSSL_ENCODER_to_bio() and
-OSSL_DECODER_from_bio() instead.
+and B<RSA> are deprecated. Applications should use L<OSSL_ENCODER_to_bio(3)> and
+L<OSSL_DECODER_from_bio(3)> instead.
The PEM functions read or write structures in PEM format. In
this sense PEM format is simply base64 encoded data surrounded