[mkgmap-dev] Border of polygon

Hi. I read the TYP compiler manual but don't understand if it is possible to make a polygon to have: 1. transparent inner colour (this should be fine using "none" as colour i imagine). 2. adding a border with one or two colours, making the outline of the area/ polygon. If it is possible, can one set the border width as well? For example, i want to mark the boundary of a nature reserve, but not fill it. I attached a very small section of a larger polygon (from some other map), the outer colour is darker blue, the inner is lighter blue. Regards Karl