Add a few documentation lines about UI_OpenSSL()
@@ -174,6 +174,9 @@ UI_get_method() returns the UI method associated with a given UI.
UI_set_method() changes the UI method associated with a given UI.
+UI_OpenSSL() is the default OpenSSL UI method for prompting
+passphrases on the command line.
+
=head1 COPYRIGHT
Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
