(width)
(height)
(device-width)
(device-height)
(orientation)
[span1]
[span2]
(aspect-ratio)
(device-aspect-ratio)
(color)
(color-index)
(monochrome)
(resolution)
[span1 >100dpi]
[span2 326dpi]
[span3 <1000dpi]
(scan)
(grid)