Internal Function: Called within the metadata_map function.
Collects inputs needed for metadata_map function (defaults or user inputs)
If some inputs are NULL, it loads the default inputs. If defaults not
available, it prints error for the user.
If inputs are not NULL, it loads the user-specified inputs.
See also
Other metadata_map_internal:
empty_count()
,
empty_plot()
,
end_plot()
,
output_copy()
,
user_categorisation()
,
user_categorisation_loop()