diff --git a/Doc/sphinx/features/exten.rst b/Doc/sphinx/features/exten.rst
index ef00296..861594f 100644
--- a/Doc/sphinx/features/exten.rst
+++ b/Doc/sphinx/features/exten.rst
@@ -1,3 +1,5 @@
+.. _simbaext:
+
 Simba Extensions
 ================
 
@@ -17,7 +19,8 @@ Recommended:
     *   Associate Files
 
 .. note::
-    You can also use the Reflection Updater (and Downloader)
+    You can also use the Reflection Updater (and Downloader) for updating
+    Reflection.
 
 ..  Not listed as directly recommended but still worth noting.
 
diff --git a/Doc/sphinx/todo.rst b/Doc/sphinx/todo.rst
index d8f84fe..4f0b792 100644
--- a/Doc/sphinx/todo.rst
+++ b/Doc/sphinx/todo.rst
@@ -24,3 +24,6 @@ Documentation TODO
 *   Expand "Feature Overview"
 	    - And its subs. There's like nothing in them, those are the type
 	      of pages I was talking about. Combine them under feature overview?
+*   Algorithm on how to write algorithms efficiently.
+    Like, remove points in TPA that are in a box. Override points or create new
+    array and add points. Also perhaps non linear algorithms.
diff --git a/Doc/sphinx/troubleshooting.rst b/Doc/sphinx/troubleshooting.rst
index 939bdea..4fa2cf1 100644
--- a/Doc/sphinx/troubleshooting.rst
+++ b/Doc/sphinx/troubleshooting.rst
@@ -9,4 +9,17 @@ problems you may encounter.
 Problems when installing or starting Simba
 ------------------------------------------
 
-Bugger.
+Where is the DTM Editor?
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+The DTM Editor a Simba Extension. See :ref:`simbaext` for more information on
+extensions and how to enable the DTM editor.
+
+Where are my Extensions?
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+All extensions are in the *Extensions* folder. If this folder is empty, you may
+need to manually download the Extensions or reinstall Simba.
+
+..  
+    Something about corrupt settings.xml