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OP25 "New" Undocumented Config File Option - 'key'

Aug 27, 2019
In OP25, there is a file called multi_rx.py. On lines 114 - 115, there is a section of code:

        if config.has_key('key') and (config['key'] != ""):
            self.set_key(int(config['key'], 0))
This section of code appears to have been introduced on May 6, 2019.

It appears that it is looking in the config file for a 'key' setting; and if present will load the key value from the config file as an integer. (I'm not sure what happens if this value is a non-integer value.)

This, is as far as I can tell, not documented anywhere. It does not appear to be in the provided config file(s).

Other places it may show up:
frame_assembler_impl.cc - line 47-49

    void frame_assembler_impl::set_slotkey(int key) {
Which was also added at the same time.

Or here.

What is this config setting for?