This lets you drop orange boxes around the map to help visualize where you have been editing
I do not check for comments left on greasyfork, i sometimes notice them when posting updates to scripts. I don't have enough time to mess with the script and have handed off development to another editor. but this request is one of the things on the to do list.
Possible New Feature?
Make the boxes persistent until hidden or manually deleted? Because I would like to keep track of places I already edit and I would like to see the boxes the next day.