Hi Steve Have been experimenting with w =odd L even w =odd L odd w sizes 3+ I used my bus bitmap to check as we've got 'millions' of bus stops in our area.Use Mapsource and my oregon to check . Used padding as you suggested but image always appeared as noise - even tried different lengths of padding. Without padding image is always rendered correctly, which seems to indicate that the alphas are parsed correctly? I had difficulty with bus stops width 3 or 5 as the pois were barely visible, even at my age ;) Degrees Opacity are maintained on Mapsource, though ,as always,not on the gps unit, but image is displayed correctly. I've downloaded yesterdays mkgmap but it didn't seem to parse truecols with colormode 32, as yet .. Nick -- View this message in context: http://gis.19327.n5.nabble.com/Wiki-page-about-TYP-files-tp5324444p5441311.h... Sent from the Mkgmap Development mailing list archive at Nabble.com.