Hi On my Oregon 600 Garmin maps show a title and a subtitle in the 'configure maps' setup ie Digital Globe (title) Demo JNX (subtitle) So far I've not been able to create 'sub descriptions' using any of the available commands However, interestingly , I recently discovered that using Mapinstall I can create subtitles but its messy. I've done some testing 1) using the following command I have create a gmapsup and installed the same map on Basecamp. --mapname=11223344 --family-id=6088 --country-name=my_country --series-name="map1" --family-name="map2" --overview-mapname="map3" --description="map4" --remove-short-arcs --style-file=styles --style=june2014 --output-dir=C:\a_upl2vb6\temp --transparent --tdbfile --draw-priority=10 --gmapsupp C:\Users\me\Desktop\map.osm 2) On the Oregon the gmapsup (mkgmap.img) only produces: 'map4' as a main title 3) installing the map (mapinstall.img) using mapinstall I get map1 ( as title) map2 ( as subtitle) 4) looking at both imgs I noticed some interesting points: a) MPS block 0x46 seems to contain the subtitle (in both imgs) b) the mapinstall img contains an extra 0x50 block prior to 0x46 I can't as yet tell whether a) this block present in tdb files must also be included in a gmapsupp? b) There is some additional flag that is set? c) or both? Have included small osm & gmapsup files in www.pinns.co.uk/osm/253/gmapsupps.zip regards Nick -- View this message in context: http://gis.19327.n5.nabble.com/Sub-Descriptions-in-gmapsupps-tp5810175.html Sent from the Mkgmap Development mailing list archive at Nabble.com.