1 MAILDIR
 The function of this program is to display a mail file in mail
 directory format.  By default it will display the file
 SYS$LOGIN:MAIL.MAI if it exists.  An optional file name may be
 specified.

 Syntax:
          $ MAILDIR :== $disk:[directory]MAILDIR
          $ MAILDIR [file-spec]

2 Parameter
 The optional parameter is a file specification of a mail file.  If
 no mail file specification is supplied then SYS$LOGIN:MAIL.MAI is
 used as the file to display.

 You must have read privilege for the mail file being displayed.
 This will normally mean that you can only display your own mail
 file(s) unless someone allows group or world read privilege to
 their mail file(s).

