+
+If nmh has been compiled with KPOP #defined, the `\-kpop' switch will allow
+\fImsgchk\fR to use Kerberized POP rather than standard POP3 on a given
+invocation. If POPSERVICE was also #defined to "kpop", \fImsgchk\fR will be
+hardwired to always use KPOP.