Reason # 9,457,298,284.2 as to why I want to strangle the guy who came up with PREV

["Corey Saxe" <csaxe@xxxxxxx>]

OK,
I'm probably missing something here, but when I plot:
V1:=Input("Periods",2,250,5);
A1:=(C-Ref(C,-V1))/-V1;
A2:=Sum(LastValue(A1+PREV-PREV),V1);
A2

I get a line just fine. But when I add CLOSE to it, it won't plot a line:
V1:=Input("Periods",2,250,5);
A1:=(C-Ref(C,-V1))/-V1;
A2:=Sum(C + LastValue(A1+PREV-PREV),V1);
A2

{Maybe PREV is supposed to stand for PREVERT}

-Corey Saxe