Firefox Support Forum

I don't know how I manage to turn this feature on and can't figure out how to turn it off without having to close the browser entirely. I assume it is some type of developer tool I accidentally enable.

It displays a green grid over webpages and purple outlines on window features like the scrollbar and address bar. I don't have a screenshot because I can't figure how to turn this on.

It seems I can easily turn this on by accident with a keystroke but no easy way to turn it off.

Hello,

I am wondering what if anything regarding settings, customization, data, etc is likely to break if I perform this update? THis has happened in the past and is why I turned auto update off. Should any intermediate updates be done to stepover/convert any of the data structures to a newer format?

Thanks, Steve