Content Comparison

interface CharDisplay {
    Promise<void> show(in unsigned long row, in unsigned long col, in DOMString text)
    Promise<void> clear()
    Promise<void> setPos(in unsigned long row, in unsigned long col)
    Promise<void> setCursor(in unsigned long cursor) // 0=off, 1=blink, 2=underline, 3=both
    Promise<void> setContrast(in unsigned long contrast) // 0-100
    Promise<int> getContrast()
    Promise<void> setBrightness(in unsigned long brightness) // 0-100
    Promise<int> getBrightness()
    Promise<int> getColumns()
    Promise<int> getRows()
}