How do you stuff and close a manilla envelope and which end does the clasp and flap go on?

To stuff a manila envelope, open the flap and insert your documents or items, ensuring they fit snugly without forcing them. The clasp should be on the side of the flap, which is the top end when the envelope is oriented with the flap facing up. Once filled, fold the flap down securely and press the clasp to seal the envelope. Make sure the envelope is properly closed to protect its contents during handling.