HP 262SA - User Definable Function Keys

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Terminal Control
USER-DEFINABLE FUNCTION KEYS
The terminal has eight user programmable function keys (user keys). These can be defined
either locally by the terminal operator or remotely by a program executing on a host com-
puter. By ((defined",
it is meant that:
1. Each key has an operational attribute (type') which may be one of three types: executed
locally at the terminal (LOCAL), transmitted to a host computer (TRANSMIT), or both
(NORMAL, as though typed in from the keyboard).
2. Each key has an alphanumeric label which, in user keys mode, is displayed with its
companions across the bottom of the screen. These labels may be up to 16 displayable
characters and may have one video enhancement selection at the beginning of each label
half, allowing different enhancements for the top and bottom.
3. A
string ofASCII alphanumeric characters and/or control codes may be assigned to each
key. This definition string may contain explicit escape sequences (entered using Display
Functions mode) but cannot contain any embedded or implicit ones (such as enhance-
ments). There is an 80 character maximum length, including escape sequences and control
codes. Note that any escape sequences within the definition will take effect when the
function key is triggered (executed).
The keys can be defined locally using the User Key Menu (Definition mode) and remotely
with an escape sequence specifying any key. Their execution can also be triggered remotely
by a host computer using an escape sequence. The defining or triggering escape sequence
may also be entered though the keyboard.
When a hard reset is performed, or the DEFAULT VALUES function key is pressed, the key
attributes, labels, and definition strings assume their default values. All have the Transmit
type attribute, the labels are ((f 1", ((f 2", etc., and the definition strings are Ec p, Ec q, etc.
Otherwise,
when the terminal is turned on, the labels last saved are displayed.
When the. key is used in conjunction with any of the fl through f8 user keys, the default
definition of that key will be transmitted to the host computer. This allows for a total of 16
function keys,
of which eight are user programmable.
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