I read in another post that "Command D" shows the room number.  This did work, however, I was wondering what the other numbers appearing on the right side top and bottom are.

Welcome on our boards MusicCass  :)

In the lower right corner you see an other very interesting feature. That is the number of secrets you found so far in a mansion.

The cyphers in the upper right corner may be not important for you (now). They give the frames per second and are only important for custom mansion designers. The closer to 60, the better. On my computer, almost all rooms give 57-58.

Freddy wrote on 02.09.2007 at 18:42:30:

The cyphers in the upper right corner may be not important for you (now)...

Welcome, MusicCass.
...if you really want to know the cyphers in the corner are, its called a room number. It specifies what exact room you're in in the mansion.

Here's an example of what it could be used in.
Let's say... some beta-testers where testing a upcoming-mansion, and they found a error. They look at the room number with the neat Command + D thing, and tell the creator what the bug is and what the room number is. Therefore, the creator can just open the mansion builder, and go into the file menu, and click the "Open Room I.D." command, and type the room's number. (or I.D.) Then the creator is in that room and can edit it to fix the bug!

That's the very often use of this feature, and now that I've come to think of it, I think its the only use!

-Wingy