ok, let’s start with this.
i load this in, and i get:
ok, now what? i read and re-read. “set a value with Input A” → to me, means, i move the A slider.
if playhead is stopped, it’ll output 0, right?
if playhead is playing, it’ll output Value of A, right?
but… where? where does it go? 
… EDIT: okay, i get it. if playing, then A goes to “out of formula”, aka where the “Help” text ends. i wonder if i could use this to write to the pattern selection or something.
ok, so, in this example, A / B / C are not set to anything, right? so i’m guessing i should maybe rename them to or , so people would then not think about that.
actually, this is the first one that definitely utterly makes sense to me. it’s a really nice thing!
now, if i wanted to reverse it, would i just go NUMLINES/LINES ?
ok so it’s definitely not just switching LINES/NUMLINES and then it goes from max to min (end of pattern).
so looks like, maybe my next question is, @uncle_c - if i wanted to reverse this, what would i do in the formula editor?
@OopsIFly attn