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A Tinderbox Reference File : Actions & Rules : Operators : Action Operator Types : Mathematical operators : + (addition)  aTbRef Site Map 
+ (addition) 
Operator Type:  Mathematical 
Operator Scope of Action:  Item 
The addition operator, + (plus sign character), returns the sum of the arguments before and after it.
$MyNumber = 3+4
The addition operator + is also the string concatenation operator, used for joining strings. Thus, the expression
$FullName = "$FirstName"+" "+"$LastName"
evaluates a first name "Jane" and last name "Doe" to a string "Jane Doe".
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