How is dTAB used?

How is dTAB used?

Here is an example of some dTAB music The beginning of Malaguena 10 11 13 11 10  20 23 21 20 21 32 31 32 20 23 21 20 32 31 As we can see this starts on the High E string (10’s) moves on to the B string (20’s) then on to the G string (30’s) then back...