Volatile:ListField

{{#lua:

 function trim(s) return (string.gsub(s, "^%s*(.-)%s*$", "%1")) end
 list = {}
 id = {}
 for page,data in stdin:gmatch("&&([%S]+)&&{{{1}}}= *([^\n]+)") do
   if ((data ~= "-") and (data ~= " ")) then
     data = trim(data)
     tmp = list[data]
     if (tmp == nil) then
       list[data] = { page }
       table.insert(id, data)
     else
       table.insert(tmp, page)
     end
   end
 end
 table.sort(id)
 for _,v in ipairs(id) do
   print("* {{{1}}} " .. v .. "")
   table.sort(list[v])
   local f = true
   for i = 1,table.getn(list[v]) do
     if list[v][i] ~= list[v][i + 1] then
       print("[[{{{2}}}:" .. list[v][i] .."|".. list[v][i] .."]]") end
   end
 end

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}}