SYNTAX            : ARG ;I ANY ESC ESC

RESULTING ARGUMENT: None

FUNCTION          : Define the specified function key. Its associated
                    register is filled with the sequence-definition
                    immediately following the command, up to the double-ESC
                    termination.

ARGUMENT          : The number of the function key to be defined.

EXAMPLE           : 0 ;i :m Press CTRL_C to abort ESC
                    Will define the Help key to display an informational
                    message.

NOTE 1            : It is not required to load function keys in this way.
                    the same result is obtained by simply moving text into
                    the register (associated with the function key)
                    directly, using the X- or @X-command. It is even
                    possible to switch to the register (with the
                    ;W-command) and edit the key definition directly.

NOTE 2            : The argument value 1 corresponds with key F01, 2 with
                    F02 etc. Value 0 refers to the HELP-key.

MATRIX