An optional statement in a WHERE construct.  Statement format:

     ELSEWHERE (mask-expr2) [name]
     or
     ELSEWHERE [name]

  The "mask-expr2" is a logical array expression (called a mask
  expression).

  The "name" is the name of the WHERE construct.

  Assignment statements following an ELSEWHERE statement are executed
  as if they were WHERE statements with ".NOT.  where-mask-expr".  If
  ELSEWHERE specifies "mask-expr2", it is executed as "(.NOT.
  where-mask-expr) .AND.  mask-expr2".

  See also STATEMENTS WHERE in this Help file.