I was trying to show maxspeed information on the map. In the lines file, I added highway=* & maxspeed=* {addlabel '${maxspeed}'} which replaced the name by maxspeed. Next, I looked at some examples in the default style which add ref as a label (but whose syntax I do not understand - looks more like changing the value fo the name tag), and tried to adjust it for maxspeed: highway=* & maxspeed=* { ${maxspeed|highway-symbol:hbox}; addlabel '${maxspeed}'} fails with an error message. Do I need to add the result to some variable? I tried highway=* & maxspeed=* {set x='${maxspeed|highway-symbol:hbox}'; addlabel '${maxspeed}' ; } no - that repalces name by maxspeed again. Is it possible to add such markers as are used for reference numbers to the highways which show maxspeed instead of something else? If so, how can that be achieved? Thanks a lot for your hints.