Thank you for the response, Thomas. I did post something on the forum, but not under “idea”. Rather, I have an idea for arriving at the result you were seeking, or pretty close. If we could get changes in zoom in the same way that we can get changes in the center address of a map every time some clicks and drags the map, then the zoom could be used to calculate a radius to be used as a filter. So, I am on a quest now to use the html element in conjunction with the map to get the zoom. The only problem is that I cannot figure out how to use javascript with a map element drawn from the Elements section in the bubble editor. See here: Get Map view zoom value
Regarding a “title window”, this can be achieved like this: Create Popup When Map Marker is Clicked
It is a bit of a work-around.