Stack Input: Value (Float disallowed), Value (Float disallowed)
Stack Output: Integer, Memory Address (if exactly one of the input values is a Memory Address), or Program Address (if exactly one of the input values is a Program Address)
Operand: None
Since: 1.0 (modified in 2.0, 2.6)
Description: Adds the first input value to the second input value and places the result on the stack.