I think both SSL_CTX_get_extra_chain_certs and SSL_CTX_get_extra_chain_certs_only should be described here.
ok? Index: SSL_CTX_add_extra_chain_cert.3 =================================================================== RCS file: /cvs/src/lib/libssl/man/SSL_CTX_add_extra_chain_cert.3,v retrieving revision 1.7 diff -u -p -u -p -r1.7 SSL_CTX_add_extra_chain_cert.3 --- SSL_CTX_add_extra_chain_cert.3 2 Jan 2020 09:09:16 -0000 1.7 +++ SSL_CTX_add_extra_chain_cert.3 12 Jan 2020 08:06:49 -0000 @@ -115,7 +115,9 @@ An application should not free the object, nor the .Pf * Fa certs object retrieved by -.Fn SSL_CTX_get_extra_chain_certs . +.Fn SSL_CTX_get_extra_chain_certs +and +.Fn SSL_CTX_get_extra_chain_certs_only . .Sh RETURN VALUES These functions return 1 on success or 0 for failure. Check out the error stack to find out the reason for failure.