An easy way to extend CoverageJSON is to add new fields to it. In order to avoid name clashes (both with other extensions and future versions of the format) it is recommended to use names of the form "prefix:suffix". If CoverageJSON documents using that prefix shall be published more widely, then the prefix should be registered together with the corresponding namespace URI. A registration avoids name clashes and eases common understanding of extensions without establishing the full machinery of JSON-LD for example. More details can be found in the "Extensions" section of the specification.