AutoLISP Reference Guide - Autodesk

(+ 1 2) returns 3 (+ 1 2 3 4.5) returns 10.5 (+ 1 2 3 4.0) returns 10.0 - (subtract) Subtracts the second and following numbers from the first and returns the difference (-[numbernumber]...) Arguments number A number. Return Values The result of the subtraction. If you supply more than two number arguments,

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