Quote:

Those are Part Markers.

Blue Part Markers are generally good for the first and last times through the chorus, while Green is good for the middle choruses where soloing etc. may take place. The B substyle may have a bit more of a walking bassline, etc. in it for that purpose.

--Mac




What Mac posted above is basically what you get with a song using the repeats function if you have the option set to vary style in middle choruses. If you like that you don't have to use the part markers except where you want the drum fills. You can set that option either globally or per song.