Sony MVS-8000X User Manual page 288

You can carry out key snapshot operations in the independent key transition
control block (simple type) and Flexi Pad control block (simple type).
There are four dedicated key snapshot registers for each of keys 3 and 4.
Key source name display/key
snapshot buttons
In setup, assign the function of
the K-SS 3/4 button to any of
these four buttons.
The functions of the key 3 control block and key 4 control block are the same.
Saving a key snapshot
For example, to save the settings of M/E-1 key 3, use the following procedure.
1
2
288
Key Snapshots
Key 3 control block Key 4 control block
K-SS button
Independent key transition control block (simple type)
In the M/E-1 independent key transition control block, press the [K-SS]
button in the key 3 control block, turning it on.
This switches to key snapshot mode, and the key source name display/key
snapshot button shows the state of registers 1 and 2 for key 3.
Pressing the [K-SS 3/4] button shows the state of registers 3 and 4 for key
3.
Off: Nothing is saved in the register.
Lit orange: Settings are saved in the register.
For a register holding a snapshot, the register name is shown as up to eight
characters.
In the Flexi Pad control block, hold down the [SNAPSHOT] button and
press the key source name display/key snapshot button corresponding to
the register in which you want to save the snapshot.