RoadMap 1.1.0 showing display of an on-screen route (green
directional markers) and actual track followed (purple dots). This
display shows anti-aliased lines, drawn with AGG support.
RoadMap 1.1.0 showing customized UI, and showing the "primitive"
internal font that can be used when no other font is available
to present angled text. (This is the GTK version.)