Serban, There is a good chance that I won't be at this meeting. The things that I have to do still are 1. Put in TMBTree code. 2. Write specific code to handle L3 tracks. The current code will save pt, det eta, phi, and z for all tracks. Better would be compressed helix parameters. A hit map would be nice. There likely needs to be a limit on the number of tracks saved. 3. D0OM packing is not being used. Turning it on requires making decisions about what precision is required. A couple of problems came up in p13.03: shower widths were not getting filled for the electrons, and objects that were handled as a default case (namely tracks) were lost. Fixes for these are on the head and p13-br. Peter