a two-character CMS file identifier field comprised of the filemode letter (A through Z) followed by the filemode number (0 through 6). The filemode letter indicates the minidisk of SFS directory on which the file resides. The filemode number indicates the access mode of the file. See also the entry for file access mode.

a two-character identifier field of the fileid under CMS. The first character is the filemode letter (from A to Z) that identifies the CMS minidisk or Shared File System directory where the file resides. The second character is the filemode number that indicates the file's access mode.