that was a personal note when trying to determine the extent and coverage of the newly-available esri imagery, added from an editor with no ability to dump notes, also for easy visualisation of the polygon by a handful of nodes on the latest-changes page.

the note seems still to hold true for esri, and it did allow me to do what i wanted back then when i had no idea where i was editing, but whatever, it would be mixed with other unrelated notes to distract from the polygon one can infer from the dots an achavi view (latest changes page uses circles that stand out more), maybe, of my original changeset.