ON
|
||||||||||||||
OFF
|
||||||||||||||
KEY |
PA n
|
ON |
||||||||||||
PF n
|
= |
OFF |
... | |||||||||||
CLR |
command |
This command is used to assign functions to keys on the keyboard of video terminals. Moreover, you can change, activate and deactivate the assigned functions.
This is possible for the following keys:
PA1 to PA3,
PF1 to PF24
CLEAR
To each of these keys, you can assign one of the following functions:
a Natural system command,
a Natural terminal command,
a user-defined command.
Natural will execute the assigned command whenever you press the corresponding key in
command mode (NEXT prompt
).
Notes:
KEY
are totally
independent of assignments made with a SET
KEY
statement in a program.
KEY
.
This document covers the following topics:
If you enter only the command KEY
(without parameters), the
Function-Key Assignments screen will be displayed. On this screen,
you can assign commands to the individual keys by entering the command names in the input
fields.
To assign a different command to a key, you overwrite the existing entry in the input field.
To delete a command assignment, you delete the entry in the input field or overwrite it with blanks.
You can also assign commands to individual keys by specifying them directly with the
KEY
command. For example:
KEY PF1=CLEAR
If the assigned command contains blanks, it has to be enclosed in apostrophes. For example:
PF13='UPDATE OFF'
With the command KEY OFF/ON
, you deactivate/re-activate all
function-key assignments:
KEY OFF |
If you the press a function key, Natural will return an appropriate message indicating that the key is not active. |
KEY ON |
Re-activates all function-key assignments that have previously been
deactivated with KEY OFF .
|
You can also activate/deactivate the keys by overwriting the entry
ON
/OFF
in the field Activate Keys at the
top right-hand corner of the Function-Key Assignments screen.
Note:
The CLEAR key cannot be activated/deactivated.
Unless another function is assigned to it, it has the same function as the terminal
command %%
. The
command KEY ON/OFF
and the Activate Keys
field have no effect on the CLEAR key.
With the command KEY key=OFF/ON
,
you deactivate/re-activate the command assigned to a specific
key.
KEY key=OFF |
Deactivates the command assigned to a specific
key. For example:
KEY PF24=OFF |
KEY key=ON |
Re-activates a previously deactivated command assignment. For example: KEY PF24=ON |
Note:
The commands KEY CLR=ON
and KEY
CLR=OFF
are not possible (see also Note above).