1-Fold (in half) - Front Side Out (folds at the top): Folds paper to 1/2 of finished size, front side of document facing out.
C-Fold (in thirds) - Folds paper to 1/3 of finished size, front side of document facing out.
Z-Fold (in thirds) - Front Side Out: Folds paper to 1/3 of finished size, 3rd panel of front side of document facing out, 1st panel of back side facing out.
Please Note: When uploading a 2-page document that requires folding, Page 1 should be the front/outside and Page 2 should be the inside.