| Sun specular colour | The colour of specular reflections off objects (units, etc.) |
| Sun direction | An x/y/z vector of the sun's direction. Use the Calc. button to automatically calculate these values from L3DT's light map. To set the vector values manually, please consult the SMD specification page for an explanation of the axis definitions. |
| Ground sun colour | The light colour applied to ground when fully lit by the sun. Note this added to the ground ambient colour (see below). |
| Ground ambient colour | The light colour applied to ground when fully shaded from the sun. Note this added to the ground sun colour (see above). |
| Ground shadow density | The ratio of ambient to sun light colours that are applied to ground when fully shaded. Large values give darker shadows. |
| Unit sun colour | The light colour applied to units when fully lit by the sun. Note this added to the unit ambient colour (see below). |
| Unit ambient colour | The light colour applied to units when fully shaded from the sun. Note this added to the unit sun colour (see above). |
| Unit shadow density | The ratio of ambient to sun light colours that are applied to units when fully shaded. Large values give darker shadows. |
