David Megginson: I've created a couple of very simple textures: one for

David Megginson: I've created a couple of very simple textures: one for
the NAV face, and one for a NAV needle (just a thin, slightly blurry red
line for now).  I'm attaching my two new textures, together with my newest
panel.cxx (modified from Alex's to use the new textures).  Obviously,
there's a lot more to do, including TO/FROM indicators, but this is a
start, and it's fun.