Charlie Ferrero wrotes *on* /Sat Feb 13 09:23:30 GMT 2010/ --Is this a known problem with TYPs, line definitions with borders and --(certain?) Garmin GPS units or am I doing something silly? It's the first time that i see this effect. There are two ways of giving a definition for the drawing of a polyline in typ file. 1. providing a bitmap definition 2. providing the definition in linewidth/borderwidth format For further informations you can have a look in the manuals of the mapcompiler cgpsmapper and MapTK. I don't think that the effect is only caused by the way of definition. But maybe it's caused by erroneous definitiopn in the typ file and/or the map or it's related to the gps unit. First i would have a look into the typ-file. Afaik not all Garmin Gps have the ability to use typ-files(especially older series doesn't), so may be this also could be a reason cheers Gert