these template scripts are executed outside of Ekos, so any return value like the parking status (roof open or roof close) must be send to Ekos in some way.
In park.py, if parking is successful, the file 'indi-status' stores the value '1 0 0' ( '0 0 0' if roof open) then Ekos reads this value and so is aware of the parking status.
That's the meaning of the coordinates function.
 
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