Some more notes...
- I believe contenLister has code to open a document in a viewer that is already running.
- memory usage is a main concern. A default Iliad that runs out of memory just crashes (or reboots). We will need to enable swapping to avoid this.
- Ipdf sets a memory limit for itself (in main.cc): 50 MB (which is almost everything). This can be changed...
Personally I think that the Iliad's main GUI (contenLister) should be rewritten. [Preferably in Lua which would make the amount of code much smaller and flexible

]. However I think that the task of developing it in a reliable way will be much to big...