diff --git a/source/3/3.1/System_Tools.rst b/source/3/3.1/System_Tools.rst
index 1d867b83..db6caf70 100644
--- a/source/3/3.1/System_Tools.rst
+++ b/source/3/3.1/System_Tools.rst
@@ -2,10 +2,10 @@ Chapter 3.1 System Tools
 ========================
 
 .. toctree::
-  :maxdepth: 2
-  :titlesonly:
+   :maxdepth: 2
+   :titlesonly:
 
- 3.1.2/htop 
- 3.1.3/qterminal
- 3.1.5/nm-tray
- 3.1.6/qps
+   3.1.2/htop 
+   3.1.3/qterminal
+   3.1.5/nm-tray
+   3.1.6/qps
diff --git a/source/3/System_Tools_and_Prefrences.rst b/source/3/System_Tools_and_Prefrences.rst
index 3108de06..9317a360 100644
--- a/source/3/System_Tools_and_Prefrences.rst
+++ b/source/3/System_Tools_and_Prefrences.rst
@@ -1,9 +1,11 @@
 Chapter 3 System Tools and Prefrences
 =====================================
 
+This chapter contains details on tools to manage your system and to change prefrences on Lubuntu. 
+
 .. toctree::
-  :maxdepth: 2
-  :titlesonly:
+   :maxdepth: 2
+   :titlesonly:
 
-  3.1/System_Tools
-  3.2/Prefrences
+   3.1/System_Tools
+   3.2/Prefrences