k3d/share/shaders/k3d_toonmap.sl:11:float channel4=0; 
k3d/share/shaders/k3d_toonmap.sl:53:if (channel4 < 0 || channel4 > 3)
k3d/share/shaders/k3d_toonmap.sl:59:temt_c4=texture(Highlight_Map[channel4],temp_ss4,temp_tt4,"swidth",swidth4,"twidth",twidth4,"samples",samples4);
