Emacs - Toggling between Visual Markers?

Question

I'm trying to figure out if this functionality exists, or if not how difficult it would be to program.

Essentially what I'm looking for is the ability to mark multiple lines in a file with some form of highlighting to point out that they're important lines. From there on it would be great to be able to toggle on/off the marker, and be able to toggle through them - for larger files it would be great to be able to do this for important lines.

The markers don't have to persist, just for that session would be great.

I took a look into the "Overview of Markers" page - but I'm not sure this is exactly what I want, and if it's worth the time to try and implement it if it's not.

Thanks for any/all help!

Answer 1

It looks like bm.el does exactly what you want.