[mkgmap-dev] Footways/cycleways and motorcars

Hi, The other day, while routing to a geocache, my Oregon wanted me to "turn" into a greenway which was close to where the geocache would be. Is there a way to avoid this by default? Seems to me that the default style should imply motorcar=no on footway and probably also on a cycleway. If not, should I change the greenways to add the explicit motorcar=no or doing that via style is better? I have not used styles, so I assume it would be simple to override the default just for that. Francisco