LUX accepts input from the keyboard, disk files, and tape files, and provides output to the screen, disk files, and tape files.
| • Command Input: | Typing commands at the keyboard | |
| • Data I/O Routines: | Getting data in or out of LUX | |
| • Formatted Input/Output: | I/O according to specific formats | |
| • Escape Codes: | How to specify non-printable characters |