NL - Not Less Than
The Not Less Than (NL) operator checks that Operand 1 is not less than Operand 2. 
Statement:			Ensure that the gross pay is not less than $100.00 for this pay. Use the current value of the Gross Pay Element to check this amount.
||Line||CMD||OT||Operand 1||OPER||OT||Operand2||OT||Operand3||If Goto||	Else GoTo
00010	IF	EC	GROSS PAY	NL	N	100			99999	00100
00100	MSG	A	EE'S EARNS VERY LOW, PLEASE VERIFY!						99999	
99999	EXIT								99999	

The UserCalc checks that Operand 1 (Gross Pay) is not less than (equal or greater to) the value in Operand2 (100). 
Notice that this reverse logic is fairly difficult to read, and therefore should be avoided where possible in usercalcs.