Library /sys$common/syshlp/HELPLIB.HLB
COBOL, PROCEDURE_DIVISION, PERFORM, 4format VARYING, increm
 *Conan The Librarian 

  is a nonzero numeric literal or the identifier of a numeric
  elementary data item.  It systematically changes the value of var
  each time the program executes all statements in the PERFORM range.
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