File formats

• CBS/CBSU/CBSR
• SPKG/SPKU/SPKR

CBS/CBSU/CBSR

• CBS - Canonical package
• CBSU - Delta package
• CBSR - Recall package

SPKG/SPKU/SPKR

• SPKG - Canonical package
• SPKU - Delta package
• SPKR - Recall package