Tandy 1000 Basic Reference Manual page 192

Chapter 10 I BASIC Keywords
KEY/Set/Display Statement
KEY number,string
KEY ON
KEY OFF
KEY LIST
KEY number,string
Assigns or displays function key values.
Number is an integer in the range 1 t o 12 that indicates the
function key being defined
(m
- [ I .
String is the string expression assigned to the key and may con-
tain a maximum of 15 characters.
You can program the function keys on your computer to generate
a specific string of characters. When you press the key, BASIC
displays the string on the screen just as if you had typed every
character. Initially, the function keys have these values:
F1 LIST F7 T R O N m
F2 RUN= F8 TROFF-
F3 LOAD" F9 KEY
F4 SAVE" F1O
SCREEN 0,0,0 [ENTERI
F5 CONT- F11 none
F6 , " L P T l : " m F12 none
Function keys 11 and 12 do not have initial values. You can use
the KEY statement to define these keys. You also can use the
KEY statement t o redefine the other function keys s o t h a t
BASIC displays the strings you use most often.
You can remove the string from a function key by assigning it a
string length of zero
(" ").
For example:
K E Y 1
,
"'I
Key no longer has a string assigned to it. Moreover, assign-
ing a null string (length zero) to a function key disables it as a
soft key. If the soft key is disabled, INKEY$ returns a 2-byte
string. See Appendix D for more information.
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