DOCS: Mention that libcrypto has helper functions for OSSL_PARAMs
Fixes
@@ -71,6 +71,12 @@ is NULL. The usual full terminating template is:
This can also be specified using L<OSSL_PARAM_END(3)>.
+=head2 Functional support
+
+Libcrypto offers a limited set of helper functions to handle
+B<OSSL_PARAM> items and arrays, please see L<OSSL_PARAM_get_int(3)>.
+Developers are free to extend or replace those as they see fit.
+
=head2 B<OSSL_PARAM> fields
=over 4
