Sony DVS-9000 User Manual page 238

This recalls the specified snapshot, and the reference region name and
recalled register number appear in the display.
If you applied the effect dissolve or auto transition temporary attributes in
step 4, the corresponding buttons go off.
When a master snapshot is recalled, the region selection buttons light
according to the saved region information.
To cancel a snapshot recall operation
After saving a snapshot, to cancel the recall, press the [UNDO] button.
Note
It is not possible to cancel recalling a master snapshot.
Creating and saving a master snapshot with the numeric keypad
control block
To create and save a master snapshot with the numeric keypad control block,
refer to the operations in "Creating and Saving a Master Timeline Using the
Buttons in the Numeric Keypad Control Block" (page 217). Note, however,
that in place of the [EFF] button in the numeric keypad control block, the
[SNAPSHOT] button is used.
Snapshot Operations From the Numeric Keypad Control Block
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