I am new to the world of major plumbing, so please be gentle. I've looked all through this site and others to find a set up similar to that in my basement, but have had no luck. Can anyone help me out with labeling the pipes that I can see? My initial assessment was that there is a toilet drain (black cover), sewer trap (left, level with slab), and a shower drain (on right). Is the 2" pipe (located only 4" behind the black cover) a sink drain or a toilet vent?? I'd rather not combine the toilet tank and the sink (my friends might not think that's too sanitary). Am I going to have to move the 2" pipe, or can it be angled into the wall somehow? Thanks for any help in advance!