of the error number is presented.
A partial list of the error codes and messages is shown below, this also
-includes the name of the error code as defined in the header file x509_vfy.h
+includes the name of the error code as defined in the header file
+F<< <openssl/x509_vfy.h> >>.
Some of the error codes are defined but never returned: these are described
as "unused".