Tondo

Your monitor is a rectangle. Every window on it is a rectangle. Notepad is a rectangle pretending to be a sheet of paper, which is also a rectangle. At some point everyone agreed this was fine, and nobody checked with the circle.

Tondo checked with the circle.

A tondo is a Renaissance painting on a round panel. Michelangelo painted one. Raphael painted several. None of them had to implement word wrap, which is where this project spent most of its time.

The full documentation is in the README.