Minor UI feature request. When someone is doing a Visio or CAD drawing, and they have the project editor open on the side, with the list grouped by location or system, or both, if there are too many items in a location, and we scroll down, the location name is hidden. It can be a good idea to pin the current location name/group name on top while scrolling down a long list, and it's replaced by the next group name/title as soon as we scroll to the next one and the previous is hidden.