Template:Subset spec
From JRapid
<subset name = NAME displayproperties = COMA_SEPARATED_PROPERTIES order = ORDER basesubset = SUBSET (restrict?, (param|condition|and|or|restriction)*) />
<subset name = NAME displayproperties = COMA_SEPARATED_PROPERTIES order = ORDER basesubset = SUBSET (restrict?, (param|condition|and|or|restriction)*) />