Improve doc for bitmap option to garmin_gpi.

git-svn-id: http://gpsbabel.googlecode.com/svn/trunk@4133 f51c46e8-681c-474f-0cfe-069cfd0219fb

diff --git a/gpsbabel/xmldoc/formats/options/garmin_gpi-bitmap.xml b/gpsbabel/xmldoc/formats/options/garmin_gpi-bitmap.xml
index a83f9cb364f3c38e87b64a94318ad87abaffac6b..d595aed4607754504573642595ed73b16a165c4a 100644 (file)
--- a/gpsbabel/xmldoc/formats/options/garmin_gpi-bitmap.xml
+++ b/gpsbabel/xmldoc/formats/options/garmin_gpi-bitmap.xml
@@ -8,6 +8,12 @@
   into oen of the above formats to avoid errors about "Unsupported color 
   depth".
 </para>
+<para>
+  Not all devices can support all color depths.   GPSBabel (and its 
+  developers) have no way of knowing what is supported on any given model
+  so some experimentation may be necessary on your part.   It was reported
+  that a Nuvi 3790, for example, will read the POIs only if they use 8BPP.
+</para>
 <para>
    A color value of 0xFF00FF (blue=255, green=0, red=255), 
    also called "Magenta", can be used for transparent areas.