Rar: Fgronov

: Start with a square piece of paper. If you only have A4 or letter-sized paper, you can find tutorials on YouTube to trim or fold it into a square.

: If you need a more professional look, use glue and scissors to follow step-by-step official envelope tutorials .

: Follow an origami tutorial like the one on ColorsPaper for a clean, fold-only design. Fgronov rar

You can make a standard envelope using a square piece of paper by following these steps from wikiHow :

However, if you are asking how to (a common topic for "making a paper covering"), you can follow these simple origami steps to create one without needing glue or tape. How to Fold a Simple Paper Envelope : Start with a square piece of paper

Could you clarify if you meant (the mathematician), a specific RAR archive file , or something else entirely?

Depending on your project, you might prefer different styles: : Follow an origami tutorial like the one

: You can use old book pages to make "teeny tiny" envelopes by following guides from creative crafters .