Wish I could jump in on this, but the mouse I&#039;m currently using has a busted(free scrolling) scroll wheel, which is a bit more than a minor annoyance when it comes to the ease of Doom Builder 2. At least I can SR50 again though with a working right click, which has made a huge difference in my playing ability. <br /><br />Anyway, are there any KB shortcuts that&#039;d work as a zoom in/out and to raise/lower ceiling/floor heights?