=head1 SYNOPSIS
B<openssl> B<rsa>
+[B<-help>]
[B<-inform PEM|NET|DER>]
[B<-outform PEM|NET|DER>]
[B<-in filename>]
=over 4
+=item B<-help>
+
+Print out a usage message.
+
=item B<-inform DER|NET|PEM>
This specifies the input format. The B<DER> option uses an ASN1 DER encoded