[GRASS5] Cross section of G3D raster files

Dear developers and users,
i have programmed a module, r3.cross.rast, to create cross section raster maps from
G3D maps on base of an elevation map.
At my homepage you will find r3.cross.rast.tar.gz which includes the sources,
the makefile and the html description.

My homepage:
http://www-pool.math.tu-berlin.de/~soeren/grass/modules/

Any suggestions are welcome.
Have fun.

Best
Soeren