📚 About CIRCLE: First, how CIRCLE behaves in GW-BASIC

A same CIRCLE statement produces, proportionally, the same-looking circle regardless of screen mode.

However, creating a box with the line statement does not produce the same-looking box in all screen modes.

So what does this say about the CIRCLE statement in GW-BASIC ?  To be continued ...

Here are some screenshots to compare results, using GW-BASIC running in a virtual console at the Internet Archive: