Answer / mishra

When the user chooses a function code PF<nn> (<nn> can be
between 01 and 24), the system always triggers the AT
PF<nn> event. In the standard list status, the function
keys F<nn> that are not reserved for predefined system
functions all have the function code PF<nn> as long as a
corresponding event block is defined in the program.

AT PF<nn>.
<statements>.

These event blocks are executed when the user chooses the
corresponding function key. The position of the cursor in
the list is irrelevant.

If you use these event blocks at all, it should only be for
temporary test versions. In production programs, you should
only use AT USER-COMMAND with a dialog status of your own
to assign function codes to function keys. When you use
your own interfaces, the system displays a function text
explaining what the function does. This does not happen
when you use AT PF<nn> event blocks.

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