It does do tab, but I haven't tried that yet.
But it's really a phenomenal program, because it will sound
out the notes as you place them on the staff, making it VERY easy
to find the correct notes by ear. Then, you can run the whole piece
from the top, and see if it sounds reasonably close to what you have
in your head. I say reasonably, because there is only so much
musicality you can expect from a robotic MIDI playback, but it does
give you a very good idea if you are on the right track or not.