1. A one- to two-page summary of Vorbis.
2. Technical details including, but not limited to, sample rate, bit rate, compression ratio, support of variable and constant bit rate, brief specification of Vorbis.
3. A comparison of Vorbis and MP3. You may search the Internet for any comparison reports of listening quality. Note that you should give the comparison of different bit rates.
4. A list of references