Module:Pagename

Documentation for this module may be created at Module:Pagename/doc

return {
    format = function(frame)
        local f1 = frame
        local f2 = f1 and f1:getParent()
        local f3 = f2 and f2:getParent()
        return (f1 and f1.args.pagename or 'x') .. (f2 and f2.args.pagename or 'x') .. (f3 and f3.args.pagename or 'x')
    end
}