action	increment, decrement

Syntax

  increment integer-name indexer? (by numeric-expression)?

Purpose

increment increases the value of an integer by a specified amount. If no amount is specified, increment increases the value of the integer by 1:

  local integer fred initial {10}
  ;fred = 10
  increment fred
  ;fred = 11
  increment fred by 3
  ;fred = 14

decrement decreases the value of an integer by a specified amount. If no amount is specified, decrement decreases the value of the integer by 1.

  local integer fred initial {10}
  ;fred = 10
  decrement fred
  ;fred = 9
  decrement fred by 3
  ;fred = 6

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