english: Take a square. Fold it in half, fold it in half, fold it again, until it gets long and narrow, and then we'll say at the end of that, that's a flap.
non_english: Zoberte štvorec. Zohnite ho napoly, znova napoly a ešte raz, až kým nebude dlhý a úzky a na konci tohto procesu dostaneme hrot.