AT&T 6300 Programmer's Manual page 312

KEY
Statement
(Function Keys)
The Soft Keys default to the following values:
Fl - LIST<space>
F3 - LOAD"
F5 - CONT<CR>
F7 -TRON<CR>
F9 - KEY <space>
F2 - RUN<CR>
F4 - SAVE"
F6 - ,"LPTl:" <CR>
F8 - TROFF<CR>
FlO-SCREEN O,O,O<CR>
Remarks
7-156
• If the function key number is not in the
range 1 to 10, an "Illegal function call" error is
produced.
• The key assignment string may be 1 to 15
characters in length. If the string is longer
than 15 characters, the first 15 characters are
assigned.
• Assigning a
n~ll
string (string of length 0) to a
Soft Key disables the Function Key as a Soft
Key.
• When a Soft Key is assigned, the INKEY$
function returns one character of the Soft Key
string per invocation.