When you get your forks back they will have a Travel O-Ring on each leg. They are more in the cool thing to do than the useful information category. They show how far the forks compress at maxim travel. Big bumps or hard braking.
This is nice to know but remember it only tells you the max travel, not the normal travel. Why two? After you make a change to can move one of them back to zero to see if your change makes you use less travel. If you use more travel they will both move.
If you don’t like them you can cut them off. Another way to do this is with a dry eraser marker. Just draw a line up the fork tube. The seal will wipe off the marker.
Max travel is noted on your invoice. Most forks don’t go all the way down.