[GRASSLIST:4042] GML3.0

Hi list,
our project works on the development of collaboration concepts for 
simulation application (having as their free variable mainly time) and 
GIS (i use GRASS5.7 for this). I want to analyze the capabilities of 
GML3.0 to transport  spatiotemporal data between the components 
(including storing it).
I played around with v.out.ogr exporting gml2.0 files, looked a little 
bit in the code to estimate the possibility to  copy and extend this 
solution to generate gml3.0- files (but I felt a little bit lost seeing 
its complexity (:-(  ).

The question is now:
- does anybody have any experiences with this? maybe even with 
writing/reading GML3.0?
- any suggestion which way to take? Maybe also solutions which are not 
so elegant like existing for generating GML2.0

I know that this is maybe rather a gdal/OGR question, but i want to hear 
your opinion or experiences about this topic or problem.

Thanks Dani