Roland V-Drums TDW-20 Owner's Manual page 45

About Snare/Tom Instruments
The last letter of each instrument name means the sound of head
shot, or rim shot.
(Example)
S: head sound of Snare
SR: rim sound of Snare
T1: head sound of Tom 1
T1R: rim sound of Tom 1
About Cymbal Instruments
The last letter of each instrument name means the sound of bow
shot, edge shot, or bell shot.
(Example)
HB: bow sound of hi-hat
HE: edge sound of hi-hat
CrBw: bow sound of crash
CrEg: edge sound of crash
Rd: bow sound of ride
RdBl: bell sound of ride
RdEg: edge sound of ride
About Electronic Instruments
Electronic sounds can produce VERY low-frequencies when using
the Dynamic Pitch Bend function.
Please be careful about the volume of your sound system, speakers
or headphones when using this function.
45