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even-incr function

   1  
   2      even-incr: func [
   3          "Increment a value so it always returns the next even number."
   4          i [integer!]
   5      ] [
   6          add i either even? i [2] [1]
   7      ]
to math REBOL even-incr incr by gregg.irwin on Jan 10, 2006
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