Page 12 of the game manual shows how the controls work...
start = quicksave
select = quickload
circle = next message
cross = cancel
triangle = history
square = menu
R1 = fast forward
L1 = auto mode
Some of the scripts from the PC version has been cut out (not the H-scene ones). I think about 15-20 lines in total for the whole game so it's not too noticeable unless you have the PC script right next to you.
Also in HF