MODULE ASubOpen;
VAR m : ARRAY [1 .. 2], [1 .. 3] OF INTEGER; ExitCode : INTEGER;
PROCEDURE Sum(x : ARRAY OF INTEGER) : INTEGER;
VAR i, s : INTEGER;
BEGIN
  s := 0;
  FOR i := 0 TO HIGH(x) DO s := s + x[i] END;
  RETURN s
END Sum;
BEGIN
  m[1,1] := 1; m[1,2] := 2; m[1,3] := 3;
  m[2,1] := 10; m[2,2] := 20; m[2,3] := 30;
  ExitCode := Sum(m[1]) + Sum(m[2])
END ASubOpen.