Have you noticed how versatile this tool is? (I have it on a FKey as a shortcut.) You can not only heal wall intersections, but you can use it as a quicker way of trimming lines. Just drag a rough box around the line’s ends and voila! (No need to pick on the lines themselves). Also if you inadvertently cut a line and missed the undo (or removed a section) just drag a box over the offending cut and bingo! The line’s back in one piece.
David Scott