web interface / scanning cron & snapshot purge

[Julien CARSIQUE]

Hi, What is the cron format used in archiva ? Where can I find some doc about the web interface ? All I found is http://docs.codehaus.org/display/MAVENUSER/Archiva+1.0.x+Developers+Notes I also want to set the purge on 0 days, 3 snapshots. I have snapshots for same artifact from trunk and branch; is there a bug/risk that could suppress branch's artifacts because of trunk's ones ? Asking this because I know there's a similar bug when using "Delete Released Snapshots"... Thanks, Julien