I don't think "respectfully" is what was meant here ...
user name used for mapping is
unless <literal>include_realm</literal> has been set to 0, in which case
<literal>username</literal> (or <literal>username/hostbased</literal>)
is what is seen as the system username when mapping.
user name used for mapping is
unless <literal>include_realm</literal> has been set to 0, in which case
<literal>username</literal> (or <literal>username/hostbased</literal>)
is what is seen as the system username when mapping.