Help System (web edition)

CASES=<string_variable>:<value_1>,<value_2>,...
is a specification which limits the observations in connection with
several statistical operations. Only observations where <string_
variable> has one of the given values will be processed.
Example: CASES=Color:Red,Yellow,Green

Using strings containing spaces in CASES:
When space characters appear in values they must be replaced by some
other character, say '_', and this character should be indicated by
a CASES_SPACE specification.
Example: CASES_SPACE=_ CASES=ID:A_B,B_A

Wild characters in CASES:
By default no wild characters (of type '?' or '*') cannot be used, but
they may be entered by specifications CASES_WILD?=<char> and CASES_WILD*=<char> 
Example: CASES_WILD?=? CASES_WILD*=*

Options CASE_SPACE, CASE_WILD?, CASE_WILD* are not necessarily available
in all Survo operations. They are gradually introduced in versions 1.32+ .

  S = More information on selection of observations