-switch can be used to select a authorization userid to provide to SASL
-other than the default. The credentials profile entry in the
-mh\-profile(5) man page describes the ways to supply a username and
-password.
+switch can be used to select an authorization userid to provide to SASL,
+other than the default. The credentials profile entry in
+.IR mh-profile (5)
+describes the ways to supply a username and password.