-Finally, the
-.B \-folder
-.I +folder
-switch sets the
-.B nmh
-folder name,
-which is used for the \*(lqmessagename:\*(rq field described below. The
-environment variable
-.B $mhfolder
-is consulted for the default value,
-which
-.BR show ,
-.BR next ,
-and
-.B prev
-initialize appropriately.
-.PP