Parts of G3toG4’s interface to G4 needing work

• divided volumes (gsdv*)
• hits definition and scoring
• ‘“many” volumes

Proper material handling in G4 is outside scope of rztog4-call list mechanism due to the manner in which mixtures are stored in G3. User must build up mixtures from components himself

Areas needing work in G4:

• not all G3 shapes are implemented (HYPE shape is being worked on by BaBar DCH simulation group (E. Lamanna et al., Roma)
• booleans not yet implemented