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Media Types
Value Meaning
print for output to a printer
screen for presentation on computer screens
projection for projected presentations
braille for presentation on Braille tactile feedback devices
embossed for paged braille printers
handheld for small monochrome screens (phone, PDA)
projection for overhead data projectors
tv for low resolution devices with limited scrolling
tty for limited devices with fixed width characters
speech for aural presentation
all for all output devices (the default)

Stylesheet for print media usually less decorative than the one for the screen and often uses simpler layout and smaller font sizes.