gxdisplay  Cairo    PREFIX/lib/grads/libgxdCairo.dylib
gxdisplay  X11      PREFIX/lib/grads/libgxdX11.dylib
gxdisplay  gxdummy  PREFIX/lib/grads/libgxdummy.dylib
*
gxprint    Cairo    PREFIX/lib/grads/libgxpCairo.dylib
gxprint    GD       PREFIX/lib/grads/libgxpGD.dylib
gxprint    gxdummy  PREFIX/lib/grads/libgxdummy.dylib