The root figure
properties are:
__modified__
__myhandle__
beingdeleted
busyaction
buttondownfcn
callbackobject
children
clipping
createfcn
currentfigure
deletefcn
handlevisibility
hittest
interruptible
parent
screendepth
screenpixelsperinch
screensize
selected
selectionhighlight
screendepth
screenpixelsperinch
showhiddenhandles
tag
type
uicontextmenu
units
userdata
visible