comment simple effects language.

MANOVA
DQ5 BY MAN1(1 2) MAN2 (1 2) with DQ3  
/ERROR WITHIN+RESIDUAL
  /DESIGN= MAN1 within MAN2(1)
  /DESIGN= MAN1 within MAN2(2)
  /DESIGN= MAN2 within MAN1(1)
  /DESIGN= MAN2 within MAN1(2).