Help System (web edition)

Observations (cases) to be processed in statistical analyses etc.
are selected by using specifications IND, CASES and SELECT.
If no such specifications are given, all observations are active.
Otherwise an observation must satisfy IND, CASES and SELECT
conditions in this order.

  I = IND specification 
  C = CASES specification 
  S = SELECT specification 
  T = SELECT specification with negations and expressions in parentheses 
  V = Selecting variables 
  D = More information on data management