GET
  FILE='C:\clipboard\SPSS\ARL2-wn-Ss.sav'.
DATASET NAME DataSet1 WINDOW=FRONT.
USE ALL.
FILTER BY filter_$ .
EXECUTE .
GLM
  F1 F2 F3 F4 N1 N2 N3 N4 BY Context Order
  /WSFACTOR = Feedback 2 Polynomial Period 4 Polynomial
  /MEASURE = ARL
  /METHOD = SSTYPE(3)
  /CRITERIA = ALPHA(.05)
  /WSDESIGN = Feedback Period Feedback*Period
  /DESIGN = Context Order Context*Order .
