The point of this is to make Featureless Feet, which is feet with no toes. It can also make the stubby legs like the power puff girls.
I guess it works as a slider.
1=foot with no toes
1.5= you start getting the subs
2= thicker stubbed legs like the power puff girls.
it can kind of do shoes and sneakers and stuff. but not sandals. (it just makes the bottom of the sandal, maybe a strap.)
no activator prompt, just pop it in and set the strength. you can use the tags, but results may vary.
but here are some prompts, maybe it will help you understand how to use better
ffnubs: i tagged on images that just had the stubby legs (fflegs). Was meant to be the "feet/toes" of the stubby legs
ffeet: was tagged on featureless feet (feet without toes)
soles: this is the same as ffsoles prompt. but i included this so if you do something like "soles focus", it can generate the featureless feet soles.
ffsoles: this is for soles of featureless feet.
fflegs: this is for the stubby power girl style legs.

