This is the "menuitem" template. It should be called when a menu is created, using the following format:

{{menu 
|facts={{.rdf:ID|idNamesMenu}}
|topics={{menuitem
|.dct:type=preloadable
|.rdf:nodeID=idskos_prefLabel
|.rdfs:label=skos:prefLabel
|.coverage=idskos_prefLabel
|description=help:.form/skos:prefLabel
|language=project:.form/main/skos:prefLabel/text
|relation=template:.form/skos:prefLabel
|subject=template:.skos:prefLabel
}}
}}

This input is stored as follows:

{{#subobject:{{{.rdf:nodeID}}}
|publisher={{{publisher|{{FULLPAGENAME}}}}}
|type=Type:Menuitem
|.dct:type={{{type|}}}
|description={{{description|Help:Main page}}}
|language={{{language|}}}
|relation={{{relation|}}}
|subject={{{subject|}}}
|.dc:type={{{.dc:type|}}}
|.rdf:nodeID={{{.rdf:nodeID|}}}
|.rdfs:label={{{.rdfs:label|}}}
|.coverage={{{.coverage|}}}
}}

Edit the page to see the template text.