Yamaha CRW2100E Owner's Manual page 41

Appendix
Session-at-Once (SAO)
As a writing method that combines the advantages of the above-mentioned "Disc-
at-Once" and "Track-at-Once," you can combine multiple tracks into one session
and write them, and then add additional data.
For example, this is the writing method used to create a CD EXTRA format CD.
The music tracks will be recorded in the first session, and the data will be
recorded in the second session.
0 650MB
Audio Audio Audio Data
Track 1 Track 2 Track 3 Track 4
Session 1 Session 2
Lead-in Lead-out Lead-out
/Lead-in
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