+.I libdir
+install directories, all
+.I proc
+settings, and the
+.I datalocking
+method described in the
+.IR mh\-profile (5)
+man page. Information about the configuration of the
+.B nmh
+installation is also available, including the default mail spool
+locking method. To test whether the configuration includes
+support for SASL, TLS, and
+.IR iconv (3),
+the following commands, respectively, will output a non-null string to
+indicate support:
+.PP
+.RS 5
+.nf
+mhparam\0sasl
+mhparam\0tls
+mhparam\0iconv
+.fi
+.RE
+.PP
+Conversely, no output means that the specified support is not included.
+The
+.B \-debug
+switch displays all such other information available from
+.BR mhparam .