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- ASSIGNMENT OF KEYS
-
- You can assign (change, map, program) what occurs in the computer in response
- to pressing a key. For the assignments to work, most DOS systems require the
- line DEVICE=ANSI.SYS in the CONFIG.SYS file. Any assignments you make will
- probably be ignored by separately purchased programs. You are limited to about
- 200 stored characters for such assignments, and each assignment occupies at
- least 4 characters. See the "SUMMARY COMMAND_EDITING" topic for information
- about the default key assignments for function keys.
-
- Key (re)assignment can be done by the PROMPT, ECHO, and ESC commands. Such
- commands are usually stored in a batch file. Such a batch file MUST run with
- ECHO OFF, or the keys won't get reassigned. Each command used to reassign a
- key must be displayed on the screen, or ANSI.SYS won't "see" the escape string,
- and no reassignment will occur. When PROMPT command(s) are used, each command
- will erase the screen. After a series of such PROMPT commands, you will
- probably want to enter a final PROMPT to re-establish the prompt displayed
- by DOS to solicit your next command. Instead of a PROMPT command, an ECHO
- command can be used. An ESC command can also be used (on those systems which
- have the ESC command). The first "[" on these PROMPT, ECHO, and ESC commands
- is required. Subsequent "["s and "]"s indicate that what follows is optional.