Roland GR-1 Owner's Manual page 160

2. Using the EYS and DP-2 Pedals
En
eene
button on the front
with a pedal as well.
(er P. 6-19))
You will be returned to the Play mode.
* There is no need to save the changes you have made to System settings with Patch Write,
as they are automatically registered in memory when you exit to the Play mode.