Creating Waypoints in Game Map

[BuzWeaver]

I've conducted a search here and on the net, however I've not been able to figure out how to make Waypoints with the map while in-game. It took me a while to figure out that I have to hold down my left mouse button and then backspace to clear the waypoint field. I imagine I'd be able to copy/paste a waypoint (LOC) into the field, but is there a way to make a waypoint while in-game?