The IFSTRSUB macro tests whether a string is a sub-string of another string. It is similar to IFSTREQUAL (see section ??), except that the test is whether the second string is part of the first one. Hence:
IFSTRSUB(some piece of text)(ce o)
    (truelist)
    (falselist)

evaluates to truelist.


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Copyright (c) 1997, 1998, 1999 Karel Kubat and Jan Nieuwenhuizen.

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