I foiled your plan

What was done there? I must admit, I don't get it...

Foil is like the distributive quality to make an equation with 2 sets of parenthesis. He did it wrong, though.

Thank you for explaining :)
Although I know the process, I didn't know foil was the English term for it.

Foil : First, outside, inside, last.

They did. However, I'm not sure you correctly implemented spelling in your comment.

Actually it would be, PA, PNtLA, LN

It is

I think it's PA+(PN+LA)+LN

Yeah, i commented that earlier

Oh sorry