diff --git a/docs/landscape.html b/docs/landscape.html
--- a/docs/landscape.html
+++ b/docs/landscape.html
@@ -146,10 +146,11 @@ m5 bits 7 and 6 set: railway depot / che
 <br>
 <br>
 <li>m1: <a href="#OwnershipInfo">owner</a> of the depot / checkpoint</li>
+<li>m2: For waypoints, index into the array of waypoints.</li>
 <li>m3 bits 0..3 = <a href="#TrackType">track type</a></li>
 <li>m3 bit 4 = use custom sprite (valid only for the checkpoint)</li>
 <li>m3 bit 6 = track on this tile is reserved by pbs</li>
-<li>m4 = custom station id</li>
+<li>m4 bits 0..3 = ground type, as per m2 bits 0..3 for railway tiles.</li>
 </ul>
 </td></tr>