I have a topographical map made by a LOT of layers and each layer as got a LOT of differnt symbols (some ruled by representation... and I've never used it!).
is there a way to change the colours of all the obejts from black to gray 60%?
the reason is that I have some problems using transparency, so I have to put topography on top of the other layers, but I want it to be less evident!
thanks!!
M2
