[mkgmap-dev] Bridge type code

Hi. I am thinking on drawing a symbol for bridges on trails, but not for larger highways. The style would be selecting somthing like: highway=path & bridge=yes. I would create a type image for that, but the question is if there is any good type code, i looked up that 0x6401 might be a good choise, can anyone comment on this, is this a good choise or are there type codes that are better suited for my situation? Regards Karl