Sony RDR-GX300 Operating Instructions (RDR-GX300 DVD Recorder) Operating Instructions Manual page 91

Z H PLAY button* (51)
The button has a tactile dot.
X PAUSE button (51)
x STOP button (51)
wj CHAPTER MARK/ERASE buttons (65)
wk INPUT SELECT button (49)
wl COMMAND MODE switch (DVD 1,2,3)
(22)
* Use the tactile dot as a reference when operating the
recorder.
91
,continued