Save state before trying XRC method
Migration to XRC done, need to resize the bitmaps
resize window works, need optimization: suppress bitmap...
cleanup ok, but crash at exit (from tick).
no more crash (masked by "catch expr" :o(
store event in ets, retreive ets and plot with fix time boudaries
task activity Plot ok - link with events and plcmanager
zoomout, zoomin, zoomfit, tostart, toend