240 neutral wire

I have come across this many times lately that people have turned the neutral wire into the second hot wire on 240 panels. I am just curious if there is a certain way to describe this better then. stating the obvious.

both cases they have either taped the white wire with black tape or used a sharpie.

Any input would be helpful

Thank you


It is permitted to be reidentifed as an ungrounded conductor when you comply with 200.7©.

That’s how you do it.