Alphabets glitch on matlab screen

Hi,

For the past few weeks, my matlab screen has displayed some alphabets (in a grey box with a black border) on the editor screen (near the title of the code). It doesn't interfere with my work. But now I'm curious what the cause could be. Is it a glitch or something I'm doing that causes it?

Thank you for your time.

Answer 1

[Image Analyst]

Are you using Windows? Did you by chance happen to hit the Alt key? That will do that. But typing Alt again or clicking anywhere will make them go away.

[Dolly More]

Yes, I am using Windows. I may have pressed the Alt key.

When I pressed the Alt key again, it displayed new alphabets that I could remove, but the old ones remained.

I'm hoping the alphabets will disappear once I restart the PC.

Thank you!