.option client_authz gsasl string&!! unset
This option can be used to supply an &'authorization id'&
which is different to the &'authentication_id'& provided
-by $%client_username%& option.
+by &%client_username%& option.
If unset or (after expansion) empty it is not used,
which is the common case.
.option client_channelbinding gsasl boolean false
-See $%server_channelbinding%& below.
+See &%server_channelbinding%& below.
.option client_password gsasl string&!! unset
This option is exapanded before use, and should result in