hi, i dont know what a certain symbol means:

E|--------------|---------------|---------------|
B|---0h1--0h1---|----0----------|----0--------0-|
G|--2---2-------|---0--------2--|---0--2-0-0h2--|

what does the `h` in 0h1 and 0h2 stand for?
(probably a dumb question)

thanks alot

h = hammer... you hit the string 0 then hammer onto the 1