- <para> GPS Manager can read and write formats that this
-converter doesn't understand. The default formats (WGS84, DDD) work
-reliably.</para>
+ <para> <ulink url="http://www.ncc.up.pt/gpsman/">GPS Manager</ulink>
+can read and write formats GPSBabel doesn't understand. The format defaults
+(WGS84, DDD) work reliably. Tracks, routes, and non-default format options
+are not supported.
+ </para>
+
+ <para>This format is documented at the GPS Manager
+ <ulink url="http://www.ncc.up.pt/gpsman/gpsmanhtml/manual/html/GPSMandoc_30.html>doc site</ulink>.
+ <para>