1+ (increment) From AutoCad AutoLISP Functions previous page next page ~ (bitwise NOT) Operators 1- (decrement) AutoLISP Reference Guide > AutoLISP Functions > Operators > 1+ (increment) Increments a number by 1 (1+ number) Arguments number Any number. Return Values The argument, increased by 1. Examples (1+ 5) returns 6 (1+ -17.5) returns -16.5 previous page start next page