Why is half the code editor a different colour?

Brand new to Builder, why is half the code editor a different shade and how can I make it all the same?

Thanks

That is the “show right margin” position option, together with “right margin position” in every language - not sure if it can be disabled globally, though

It’s there to help keep a reasonable maximum line width. As already said, though, it can be disabled.

Thanks. I figured it would be something to do with a character limit margin but didn’t realise the setting was per language.