# File lib/rumai/wm.rb, line 562
    def area_of_client aClientOrId
      arg =
        if aClientOrId.respond_to? :id
          aClientOrId.id
        else
          aClientOrId
        end

      manifest =~ /^(\S+) #{arg}/
      if areaId = $1
        Area.new areaId, self
      end
    end