Just made some experiments:
first I disconnected all DMX and MIDI-cables,
then I cleared all subs and cues manually - that didn't free too much memory, although it should have....
then I cleared all mems/subs using the option in the setup menu - voila, free 100%, memory, fixture attributes still there
changed the DMX-Input option from "snapshot" to "subs"
with no data cables attached I programmed a 40-step chase using conventional lights only, no "+" in the cuelist shown,
jester startet eating up memory fairly rapidly, memory down to about 90%
then I cleared the chaser manually (using clear and shift) - freed about 1% of memory
again, cleared the (now supposedly empty) memory by using the option setup menu.
Now I'm a little at loss here. What is all this data, that the console is retaining even though submasters and cuelist appear to be empty (but really are not, since you can free the memory with the setup menu)?? Is there a setup option I forgot?