xdg config
current layer selection, layer visibility selection.
scrolling
tkinter canvas !!
grid snapper
arcs, triangles, ...
pads
grouping and ungrouping of items.
http://www.gedasymbols.org/
keepouts
http://www.brorson.com/gEDA/land_patterns_20050129.pdf
gerbv Gerber Viewer
SPICE
mils (1/1000 inch) => mm (0.00254 mm per mil)
gerbv
cairo ?
keyboard shortcuts for all the menu items (or just make them user-settable - see xdg or glib)
ngspice
Berkeley spice3f5 (Download) http://embedded.eecs.berkeley.edu/pubs/downloads/spice/index.htm
write man page.
fix "debian/copyright".
add update-desktop-database postinst, postrm.
fix "debian/menu".
maybe make the background (prototype) thing a layer instead (if it wasn't a pixbuf then, it would allow alpha blending etc).
eagle V6 data: *.brd; *.sch (see https://github.com/Trump211/Eagle2Kicad)
CAM Processor: Open Job, process job -> creates:
	*.cmp Component side data
	*.sol Solder side data
	*.plc Component side silk screen data
	*.stc Component side solder stop mask data
	*.sts Solder side solder stop mask data
	*.gpi Gerber photoplotter information data