Add caution for gpxver=1.1 option.

diff --git a/xmldoc/formats/options/gpx-gpxver.xml b/xmldoc/formats/options/gpx-gpxver.xml
index 4571bd7fb36fe9eb84a7962a40e87c4d64a2b8af..8e2ccc3add02d403651ed3f67a000f942efb826e 100644 (file)
--- a/xmldoc/formats/options/gpx-gpxver.xml
+++ b/xmldoc/formats/options/gpx-gpxver.xml
@@ -3,4 +3,9 @@ This option specifies the version of the GPX specification to use for
 output.  The default version is 1.0.  The only other valid value for this
 option is 1.1.
 </para>
-
+<para>
+Notice that this is not a full scale XML schema conversion.  In particular,
+if you have a GPX 1.0 file that has extended namespaces in it (such as a 
+pocket query from Geocaching.com) just writing it with this option will
+result in a horribly mangled GPX file as we can't convert the schema data.
+</para>