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- Overview of Special Keyboard Keys
-
-
- There are two categories of special keyboard keys that have special meaning to
- DOS: "DOS Editing Keys" and "Control-Function Keys."
-
-
- DOS EDITING KEYS: BACKSPACE DEL ESC F1 F2 F3 F4 F5 INS
-
- These keys allow you to edit a command before submitting it to DOS for
- execution. When you type a command and press the RETURN key, DOS will execute
- the command and store a copy of the command in memory. The stored copy of the
- command is called the "retained line." The command you are typing is called the
- "current line." The editing keys allow you to make changes to the current line.
- They also allow you to copy all or part of the retained line into the current
- line. This is a time-saving feature that is useful when you have made a mistake
- in a DOS command, or when you need to re-issue the previous command.
-
-
- "CONTROL-FUNCTION" KEYS: CTRL RETURN BREAK NUM LOCK PRTSC
-
- These keys are used to perform special DOS functions. Many of these functions
- are initiated by the combination of two keys, usually the CTRL key plus another
- key. When the CTRL key is used with another key, the function initiated gets
- immediate attention. For example, the CTRL key plus the BREAK key terminates
- the command that is currently being processed. With these keys, you can perform
- such operations as "print the screen," "printer echo," "halt processing" of
- the current process, and more.
-
-
-
- Note: If you are using an IBM PC compatible computer, the special keyboard keys
- may be different for your computer. The table below lists the differences
- between the special keyboard keys on the IBM PC, the TANDY 1000 and the
- IBM PCjr.
-
- IBM PC Tandy 1000 IBM PCjr
- ------------ ----------- ---------
- F1 Fn-1
- F2 Fn-2
- F3 Fn-3
- F4 Fn-4
- F5 Fn-5
- Home Fn-Home
- End Fn-End
- PgUp Fn-PgUp
- PgDn Fn-PgDn
- Ctrl-NumLock Hold Fn-Pause
- Ctrl-PrtSc Print Fn-Echo
- Ctrl-Break Break Fn-Break
- Shift-PrtSc Shift-Print Fn-PrtSc