!!DAY - Days 
This operator takes the day portion of Operand 2 and stores the result in Operand 1.
Statement:			Store the Day portion of the Period End Date into Variable Day of Month.
Line	CMD	OT	Operand 1	OPER	OT	Operand2	OT	Operand3	If Goto	Else GoTo
00010	LET	V	DAY OF MONTH	DAY	$S	PERIOD-END-DATE			99999	
99999	EXIT								99999