How to Talk to Output Devices

Line Printers
- Text only; simple print commands
- Some control characters (end-of-line, end-of-page)
- Some supported graphics characters and other fonts
Phototypesetters
- Extremely powerful --- multiple fonts and character sets
- Various proprietary workstations and languages
- "Customizable" languages: troff/nroff, T_EX
- Graphics and grayscale