--- a/docs/landscape.html	Sat Oct 20 21:04:14 2007 +0000
+++ b/docs/landscape.html	Sat Oct 20 21:05:18 2007 +0000
@@ -260,6 +260,11 @@
           <td nowrap valign=top><tt>C</tt>&nbsp; </td>
           <td align=left>on snow or desert</td>
          </tr>
+
+         <tr>
+          <td nowrap valign=top><tt>D</tt>&nbsp; </td>
+          <td align=left>on grass with fence and water on the lower halftile</td>
+         </tr>
         </table>
        </li>
        <li>m5 bits 5..0: track layout: bit set = track present: