Sony MVS-3000A System Startup Manual page 55

6
Change the key display priority.
a In the transition control block, press and hold the
[PRIOR SET] button and press the [KEY1] button.
The title on key 1 is displayed frontmost.
KEY1 button
Key priority display
PRIOR SET button
Transition control block
Key 1 and key 2 priority changed
55
Inserting Titles (Keys)