information that is essential for using BIO pairs.
=head1 DESCRIPTION
-BIO_new_bio_pair() creates a buffering BIO pair. It has two endpoints between which
+BIO_new_bio_pair() creates a buffering BIO pair based on the
+L<SSL_set_bio(3)|SSL_set_bio(3)> method. The BIO pair has two endpoints between which
data can be buffered. Its typical use is to connect one endpoint as underlying
input/output BIO to an SSL and access the other one controlled by the program
instead of accessing the network connection directly.