k3d/share/shaders/k3d_superplank.sl:33: *   varnishbumpfreq - frequency of bumps in the varnish coating
k3d/share/shaders/k3d_superplank.sl:81:			float varnishbumpfreq = 30;	/* Bump freq of the varnish */
k3d/share/shaders/k3d_superplank.sl:274:			    noise(varnishbumpfreq * ss,
k3d/share/shaders/k3d_superplank.sl:275:				  varnishbumpfreq * tt) - 1);
