[ ]BUGS
	[ ]check memory leaks (free/unref)
[ ]GENERAL todo
	[ ]submit pot to TP
	[ ]GTK2, improvements
	---
	[ ]memory management use $HOME_VOLATILE rather than $HOME
	[ ]categories (1 level first)
	[ ]app preferences
	[ ]note properties
	[ ]integrate text/voice notes --> gpe-notebook
	[ ]sketchpad component
	---
	[ ]open/save file, check success/failure
	[ ]when allocation, check if != NULL (limited memory)
	[ ]code cleaning!!!
[ ]FEATURES ideas
	[ ]backgrounds
		[ ].sketchbook/backgrounds/*.png
		[ ]Examples: soft gird, go, ???
		[ ]property: save_as_backgroung
		[ ]property: background [choice...]
		[ ]need save background ref with sketch, --> note properties
	[ ]stamps
		[ ].sketchbook/stamps/*.png
		[ ]property: save_as_stamp --> need extract bouding box! and transparence
		[ ]tool/toolbox: stamps
		[ ]when drawing: no lines, just picks
		[ ]ex: go stones, box, clock, ...
	[ ]categories
		[ ]one level first...
		[ ]choice widget:
			All categories
			none
			--------------
			a
			b
			c
			--------------
			Select...      select several(?)
			Edit...			
		[ ]note properties: save in [... default to current ...]
		[ ]global categories
	[ ]app preferences
		[ ]-->gpe-sketchbookrc
		[ ]colorx = "xxxxxx"
		[ ]brushx = <size> (if eraser cursor parametrable!)
		[ ]defaultcolor
		[ ]defaultbrush
		[ ]defaulttool
		[ ]confirm_save = yes|no
		[ ]confirm_delete = yes|no
		[ ]toolbar_follow_orientation = yes|no
		[ ]??? save_on_flash = yes|no
		[ ]open_first = selector|new_sketch|last_sketch
		[ ]default_background = ... (if use backgrounds!)
	[ ]note properties
		[ ]type: text/sketch/voice
		[ ]category: none/<named>
		[ ]title
		[ ]volatile/permanante
		[ ]background/template
		[ ]created_on
		[ ]updated_on
		[ ]user_datetime
		[ ]filename; url, size
	[ ]resizable sketch
		[ ]need tools: pan mode, zoom+ zoom-, fit, grown, shrink
	[ ]misc
		[ ]duplicate_current function?
		[ ]e-mail note (!)
[ ]GUI
	--
	[ ]make drawing area centered if smaller than viewport
	[ ]use disabled buttons when needed