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+ (addition)


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 Operator   [other Operator type actions]

 Item   [operators of similar scope]

 Mathematical   [other Mathematical operators]

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The addition operator, + (plus sign character), returns the sum of the arguments before and after it.

$MyNumber = 3+4 

The + sign is also used for string concatenation. Depending on context, Tinderbox will decide which operation is intended by the + sign. This is a very good reason to always enclose literal text strings in quotes.