There are few tasks more difficult, then following someone who has a head start on you, and you have no idea where they are headed. Rangers are highly trained trackers, able to follow trails left in the wilderness that are sometimes over a week old. A skilled tracker can even defeat the normal counter measures to being tracked, such as doubling over ones tracks.
Usage: use track (no target) or use track at monster/player
When you specify a target only the tracks of that target are being looked for, and you will follow the tracks if found. You can stop following with 'stop'. Otherwise you look for any tracks.