Doom 3 demo level map?

It helped me to bump up the brightness a notch in the graphic
settings.And I also map the flashlight to right click.I've never seen a
map posted anywhere.You'll find the game steers you in the right
direction by locking and unlocking doors.Pick-up all pda's as some
contain security clearances to unlock doors.Demo is pretty short if I
remember right but I bought and finished the game and ROE.