you bend the 4 up to sound like the it would on the 5th fret
Ibanez GSA60
Jackson DXMGT
Schecter Hellraiser Tempest
Ibanez S470 DXQM
ESP LTD Deluxe EC-1000
Crate Halfstack and Crate 50W Tube Head
Boss MT-2, CH-1, CS-3, NS-2, & Cry Baby
Crate XT65R
thats the pitch you bend the string up to (so bend the string at the 4th fret until it gets up to the pitch of the 5th)