0) Default font, selected whenever textmode() is called.
	Updating also updates current font (1) but currently does not update
	the secondary font (2).
1) Primary font
2) Secondary font

setting secondary charset

1) The ability to make attribute bit three select a second character set
2) The ability to make the blink attribute toggle background intensity
3) The ability to make attribute bit three NOT select high intensity
4) More control over the cursor than just three constants

CTerm support to follow using private set mode parameters.

Makefiles for *nix only so far.