Month function and its understanding in Amibroker code

Question

me = Month();
me1 = Ref(me, -1);
MFC = me != me1;
BSMFC = BarsSince(MFC)+1;

Can someone help me understand this piece of code?

Answer 1

newmonth=month()!=ref(month(),-1);

Basically Is MFC (==newmonth) checking for change of Month ?