1) C-fold: Fold flat, then in half.
2) Punch-down fold: Push one point on the rim in, then fold so that the point exactly opposite it is on a pointy end.
3) 7-fold: Like a C-fold, except then take one end of the C and slide it below the other.
But what is the origami fold? I can't find a picture anywhere.
Also, a couple of times in the archives people have referred to a U-fold, like saying "more of a U-fold than a C-fold." How can those 2 be different??
Any help appreciated.