--- a/ThemeCfg.wiki	Thu May 16 22:42:08 2019 +0100
+++ b/ThemeCfg.wiki	Thu May 16 22:52:33 2019 +0100
@@ -37,13 +37,8 @@
 === `snow` ===
 If this key is present (any value), the flakes which are normally purely decorational now behave like snowflakes. When they collide with terrain, they become a part of the landscape. This significantly changes the gameplay of your theme, so use wisely. If this key is not present, the flakes are purely decorational.
 
-== Land keys ==
-=== `border` ===
-The colour of the outline of explosions.
-
-<code>Values: red, green, blue</code>
-
-<code>Default: $50, $50, $50</code>
+== Land object keys ==
+Land objects are images that are placed randomly on the map. Objects become part of the terrain.
 
 === `object` ===
 There may be multiple object keys in the file, each one representing one land object.
@@ -83,7 +78,19 @@
  * `overlay_filename_1`: File name of the overlay image to use
  * You must repeat the last 3 arguments if `overlay_count` is greater than 1; each overlay needs its own offset and file name.
 
+=== Land decoration keys ===
+Land decorations alter the appearance of the main terrain without altering the terrain shape. They are purely decorational.
+
+=== `border` ===
+The colour of the outline of explosions.
+
+<code>Values: red, green, blue</code>
+
+<code>Default: $50, $50, $50</code>
+
 === `spray` ===
+A spray is an image that is simply drawn on top of the land.
+
 There may be several spray keys in the file, each one representing one spray object.
 The `name` is the case-sensitive name of the PNG file (without the file name suffix) of the graphics file, and `number` is the rough number of instances of this spray that may be added to the map. The number is the average number of sprays that are normally placed on a random medium-sized island. For larger and smaller landscapes, this number will be automatically scaled up or down. Please note that this number only specifies a rough goal, the actual number of created sprays may vary and you may have to play a bit with this number in order to find a good value.