OGC OWS Context Document (.cml; .ccml; *.xml)

The Open Geospatial Consortium (OGC) OWS Context documents are related to, but more powerful than, Web Map Context Documents (WCS).

The latter are limited to referencing OGC Web Map Services (WMS), whereas the former can reference other OGC Web Services, e.g. Web Feature Services (WFS), Web Coverage Services (WCS), etc.