Oce Color System 200 Operator's Manual page 21

Press the key.
OK
You can continue setting other Color Creation modes.
If the C key is pressed while setting a mode, the set mode is
canceled and the screen returns to the standard display.
Press the
OK
The Color Creation setting procedure is now complete, and
the screen returns to the standard display.
The name of the mode that was set is displayed.
The mode that was set can be canceled by pressing the
SINGLE COLOR key and then the C key.
Color Creation (General Flow of Setting/Cancellation)
key.
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