diff --git a/documentation/LevelOfDetail.txt b/documentation/LevelOfDetail.rst
similarity index 100%
rename from documentation/LevelOfDetail.txt
rename to documentation/LevelOfDetail.rst
diff --git a/documentation/ModifyingTerrain.rst b/documentation/ModifyingTerrain.rst
new file mode 100644
index 00000000..a3760bfd
--- /dev/null
+++ b/documentation/ModifyingTerrain.rst
@@ -0,0 +1 @@
+Placeholder.
\ No newline at end of file
diff --git a/documentation/texturemapping.txt b/documentation/TextureMapping.rst
similarity index 100%
rename from documentation/texturemapping.txt
rename to documentation/TextureMapping.rst
diff --git a/documentation/threading.txt b/documentation/Threading.rst
similarity index 100%
rename from documentation/threading.txt
rename to documentation/Threading.rst