event display

[Claude Petitjean <claude.petitjean@psi.ch>]

Dear Steven,

thanks very much for reviving your display (the old one
did'nt work any more and we could'nt view any more single
events).

Your instruction in e-log #408 is fine to start it, but
I have still some questions:

- is it possible to select different type of events, e.g.
   only those with E_very high.
- the old display had the feature to indicate with dashed
   lines, where the physical region of chrges is with respect
   to the muon stop. This proves to be very helpful in
   judging wether a muon is hitting the top or bottom of the
   tpc.

Perhaps there are somewhere instruction which I dont know.

Anyway, thanks for you help & regards

Claude