camptocamp/cgxp — pull request #606 by ochriste (2013-11-06 10:29:22+00:00)
Title: add the possibility to link one or more detached base layer to a normal ...

...base layer so more than one base layer can be show or hidden at once (this also works with the layer linked to the opacity slider)

I have an example where I linked the swisstopo's orthophoto with ASITVD's asitvd.fond_pourortho.
since the project is not public yet, ask me for the example url.