Non-Argo Data used by the software should be accessible online

If your software requires some non-Argo data to run (eg: bathymetry, reference data, etc ...) and if your software does not provide them, it is a good practice to:
- clearly provide references, where, and possibly how, to retrieve such data,
- rely on data that your users can get easily from an online server.

Otherwise, your software won't be easy to use and require some convoluted setup that may refrain adoption.