=pod
+=for comment openssl_manual_section 7
+
=head1 NAME
-bio - I/O abstraction
+bio - Basic I/O abstraction
+
+=for comment generic
=head1 SYNOPSIS
#include <openssl/bio.h>
-TBA
-
-
=head1 DESCRIPTION
A BIO is an I/O abstraction, it hides many of the underlying I/O
first BIO then traverses the chain to the end (normally a source/sink
BIO).
+
+Some BIOs (such as memory BIOs) can be used immediately after calling
+BIO_new(). Others (such as file BIOs) need some additional initialization,
+and frequently a utility function exists to create and initialize such BIOs.
+
+If BIO_free() is called on a BIO chain it will only free one BIO resulting
+in a memory leak.
+
+Calling BIO_free_all() a single BIO has the same effect as calling BIO_free()
+on it other than the discarded return value.
+
+Normally the B<type> argument is supplied by a function which returns a
+pointer to a BIO_METHOD. There is a naming convention for such functions:
+a source/sink BIO is normally called BIO_s_*() and a filter BIO
+BIO_f_*();
+
+=head1 EXAMPLE
+
+Create a memory BIO:
+
+ BIO *mem = BIO_new(BIO_s_mem());
+
=head1 SEE ALSO
L<BIO_ctrl(3)>,
L<BIO_set_callback(3)>,
L<BIO_should_retry(3)>
-=cut
-
=head1 COPYRIGHT
Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
L<https://www.openssl.org/source/license.html>.
=cut
+