It is a type of write mode:
RAW-DAO 96 = 2352 bytes RAW Data + 96 Bytes P-W Subchannel Data. This is the best mode for CloneCD. It allows writing of all subchannel information, including Digital Signatures, CD-Text, ISRC, Catalog Numbers, CD+G, CD+Midi, Gaps, Indices and Crazy TOCs.
(i got that from a google search)
