Associates an equivalence string and a set of attributes with a
key on the terminal keyboard.
Format
DEFINE/KEY key-name equivalence-string
1 – Parameters
key-name
Specifies the name of the key that you are defining. All
definable keys on VT52 terminals are located on the numeric
keypad. On VT100-series terminals, you can define the left and
right arrow keys as well as all the keys on the numeric keypad.
On terminals with LK201 keyboards, the following three types of
keys can be defined:
o Keys on the numeric keypad
o Keys on the editing keypad (except the up and down arrow keys)
o Keys on the function key row across the top of the keyboard
(except keys F1 to F5)
The following table lists the key names in column one. The
remaining three columns indicate the key designations on the
keyboards of the three different types of terminals that allow
key definitions.
Key Name LK201 VT100-Series VT52
PF1 PF1 PF1 [blue]
PF2 PF2 PF2 [red]
PF3 PF3 PF3 [gray]
PF4 PF4 PF4 - -
KP0, KP1, ..., KP9 0, 1, ..., 9 0, 1, ..., 9 0, 1, ..., 9
Period . . .
Comma , , n/a
Minus - - n/a
Enter Enter ENTER ENTER
Left < - < - < -
Right - > - > - >
Find (E1) Find - -
Insert Here (E2) Insert Here - -
Remove (E3) Remove - -
Select (E4) Select - -
Prev Screen (E5) Prev Screen - -
Next Screen (E6) Next Screen - -
Help Help - -
Do Do - -
F6, F7, ..., F20 F6, F7, ..., F20 - -
Some definable keys are enabled for definition all the time.
Others, including KP0 to KP9, Period, Comma, and Minus, must be
enabled for definition purposes. You must enter either the SET
TERMINAL/APPLICATION or the SET TERMINAL/NONUMERIC command before
using these keys.
On LK201 keyboards, you cannot define the up and down arrow keys
or function keys F1 to F5. The left and right arrow keys and the
F6 to F14 keys are reserved for command line editing. You must
enter the SET TERMINAL/NOLINE_EDITING command before defining
these keys. You can also press Ctrl/V to enable keys F7 to F14.
Note that Ctrl/V will not enable the F6 key.
equivalence-string
Specifies the character string to be processed when you press
the key. Enclose the string in quotation marks (" ") to preserve
spaces and lowercase characters.
2 – Qualifiers
2.1 /ECHO
/ECHO (default)
/NOECHO
Displays the equivalence string on your screen after the key
has been pressed. You cannot use the /NOECHO qualifier with the
/NOTERMINATE qualifier.
2.2 /ERASE
/ERASE
/NOERASE (default)
Determines whether the current line is erased before the key
translation is inserted.
2.3 /IF_STATE
/IF_STATE=(state-name,...)
/NOIF_STATE
Specifies a list of one or more states, one of which must be in
effect for the key definition to work. The /NOIF_STATE qualifier
has the same meaning as /IF_STATE=current_state. The state name
is an alphanumeric string. States are established with the /SET_
STATE qualifier or the SET KEY command. If you specify only one
state name, you can omit the parentheses. By including several
state names, you can define a key to have the same function in
all the specified states.
2.4 /LOCK_STATE
/LOCK_STATE
/NOLOCK_STATE (default)
Specifies that the state set by the /SET_STATE qualifier remain
in effect until explicitly changed. (By default, the /SET_STATE
qualifier is in effect only for the next definable key you press
or the next read-terminating character that you type.) This
qualifier can be specified only with the /SET_STATE qualifier.
2.5 /LOG
/LOG (default)
/NOLOG
Displays a message indicating that the key definition has been
successfully created.
2.6 /SET_STATE
/SET_STATE=state-name
/NOSET_STATE (default)
Causes the specified state-name to be set when the key is
pressed. (By default, the current locked state is reset when
the key is pressed.) If you have not included this qualifier with
a key definition, you can use the SET KEY command to change the
current state. The state name can be any alphanumeric string;
specify the state as a character string enclosed in quotation
marks.
2.7 /TERMINATE
/TERMINATE
/NOTERMINATE (default)
Specifies whether the current equivalence string is to be
processed immediately when the key is pressed (equivalent to
entering the string and pressing Return). By default, you can
press other keys before the definition is processed. This allows
you to create key definitions that insert text into command
lines, after prompts, or into other text that you are entering.
3 – Examples
1.$ DEFINE/KEY PF3 "SHOW TIME" /TERMINATE
%DCL-I-DEFKEY, DEFAULT key PF3 has been defined
$ <PF3>
$ SHOW TIME
14-DEC-2001 14:43:59
In this example, the DEFINE/KEY command defines the PF3 key on
the keypad to perform the SHOW TIME command. DEFAULT refers to
the default state.
2.$ DEFINE/KEY PF1 "SHOW " /SET_STATE=GOLD/NOTERMINATE/ECHO
%DCL-I-DEFKEY, DEFAULT key PF1 has been defined
$ DEFINE/KEY PF1 " DEFAULT" /TERMINATE/IF_STATE=GOLD/ECHO
%DCL-I-DEFKEY, GOLD key PF1 has been defined
$ <PF1>
$ <PF1>
$ SHOW DEFAULT
DISK1:[JOHN.TEST]
In this example, the first DEFINE/KEY command defines the PF1
key to be the string SHOW. The state is set to GOLD for the
subsequent key. The /NOTERMINATE qualifier instructs the system
not to process the string when the key is pressed. The second
DEFINE/KEY command defines the use of the PF1 key when the
keypad is in the GOLD state. When the keypad is in the GOLD
state, pressing PF1 causes the current read to be terminated.
If you press the PF1 key twice, the system displays and
processes the SHOW DEFAULT command.
The word DEFAULT in the second line of the example indicates
that the PF1 key has been defined in the default state. Note
the space before the word DEFAULT in the second DEFINE/KEY
command. If the space is omitted, the system fails to recognize
DEFAULT as the keyword for the SHOW command.
3.$ SET KEY/STATE=ONE
%DCL-I-SETKEY, keypad state has been set to ONE
$ DEFINE/KEY PF1 "ONE"
%DCL-I-DEFKEY, ONE key PF1 has been defined
$ DEFINE/KEY/IF_STATE=ONE PF1 "ONE"
%DCL-I-DEFKEY, ONE key PF1 has been defined
This example shows two ways to define the PF1 key to be "ONE"
for state ONE.
The second DEFINE/KEY command shows the preferred method for
defining keys. This method eliminates the possibility of
error by specifying the state in the same command as the key
definition.