The operator connection printer module is primary intended for debugging
purposes.
It accepts all incoming operator connections and prints events received
to standard output.
It also replies with a sound play request on connection and in
response to the key events 7 and 9.
Key event # closes the connection.
The configuration of the operator connection printer module with name
NAME is located in the opprinters/NAME
subdirectory.
There are no further configuration files, i.e. the subdirectory for an operator connector module is empty.