Most of the ground work for the baseline extension has been performed.
Construction of the new tracks and station has begun and proceeds almost
on schedule, although more concrete must be used than initially foreseen.
We hope to complete at least the West extension (W20, W23 and W27)
before this winter, and to make it partially available for
specific projects. See the ``Call for Proposals'', page 
.
Optimum choice of the configurations is still under study.