This is the ".dct:subject" template. It should be called in the following format:

{{.dct:subject
|string list(\n-delim)
|strings within namespace:pagenames
|string subobjects
|string array names

|set property={{{set property|.dct:subject}}}
|value count={{{value count|}}}
|value constraint={{{value constraint|}}}

Best Practices:Planned facets