I'm just trying out CC3 for the first time and it's definitely not what I am used to, but I am getting the hang of it.
I am having trouble with walls though.
First problem is how do I cut out an opening in a wall that's already there.. after I use the cut wall tool (where the cutting door objects are) and hit the redraw button, nothing happens. Same for the doors, except I can see a door there.. in the middle of the wall and it did not cut an opening.
Second problem is, maybe I went about it backwards, but I drew a cave floor and now I have no idea how to easily put a wall around all those jagged edges...

Help would be appreciated