driver

type Driver interface {
	Init() error
	Done()

	// only the following two methods update the screen contents
	// (by moving the back buffer to the terminal screen buffer
	Refresh()
	Clear(fg, bg style.CellStyle)

	Size() (width, height int)

	Fill(fg, bg style.CellStyle, ch rune)
	FillRect(rect geometry.Rectangle, fg, bg style.CellStyle, ch rune)

	SetCell(x, y int, ch rune, fg, bg style.CellStyle)
}