This is the ".as of" template. It should be called in the following format:

{{.as of
|date values, each on a separate line
|ns:pagenames, each on a separate line
|subobject names, each on a separate line

|set property=property name (default=.as of)
|value count=max || min:max (default=0:*)
|value constraint=
}}

Best Practices:Planned facets