Creates an inverse of table 1 in a translation table.
INVERSE creates table 2.

INVERSE does not preserve
multiple translations. Suppose table 1 has two (or more) different
characters translated to the same value; for example, "A" and "B"
are both translated to "1". For table 2, INVERSE uses the last translated
character for the value. "1" is always translated to "B" and not "A",
assuming that "A" appears before "B" in the first table. Sort programs
in SAS require an inverse table for proper operation.