but as this is an integral part of FlightGear, I don't want to push for it.
Try out and comment. It's available under "Debug/Property Browser". Note,
that this isn't the slow pure-Nasal implementation, but a regular dialog
using a c++ based widget. Only the handling is done in Nasal, so there should
really be not performance degradation compared with the old dialog.
Easter Eggs: some entries work differently when the Control-key is pressed:
"." -> toggle output of SGPropertyNode flags
".." -> go to root (not just one dir level)
bool entry -> toggle bool entry value
