Sony DVS-9000 User Manual page 121

Temporary attributes
When recalling a snapshot, you can temporarily apply attributes distinct from
the attributes set for each register. These are called "temporary attributes."
You can set temporary attributes when recalling a snapshot.
For details of snapshot operations, see Chapter 14 "Snapshots" (Volume 2).
Bus override
If you recall a snapshot while holding down an A or B bus button, the selection
of the signal on the A or B bus does not change when the snapshot is recalled.
This function is called "bus override."
This function is effective when cross-point hold is off, and you want to
temporarily maintain the cross-point setting. When cross-point hold is on, the
above operation is not necessary.
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Snapshots