MOD - Modulus 
Returns the remainder resulting from dividing Operand 2 by Operand 3
Statement:			Find the number of months that have passed since an employee’s last anniversary, and store the value into the Variable Months since Ann.
Line	CMD	OT	Operand 1	OPER	OT	Operand2	OT	Operand3	If Goto	Else GoTo
00010	LET	V	MONTHS TOTAL	MBT	DB	EEM.HIRE_DATE	$S	PERIOD-END-DATE	00020	
00020	LET	V	MONTHS SINCE ANN	MOD	V	MONTHS TOTAL	N	12	99999	
99999	EXIT								99999	

In the example above, the employee was hired Jan 1, 1998, and the pay period end date was June 1, 1999. The months between the two dates are divided by 12 months and the remaining months are returned. 
June 1/99 – Jan1/98 = 18   					18/12 = 1.5    			12*0.5 = 6
The value that would be calculated in Months Since Ann would be 6.