diff --git a/Writerside/in.tree b/Writerside/in.tree
index 99eb82d..de3b2d7 100644
--- a/Writerside/in.tree
+++ b/Writerside/in.tree
@@ -79,6 +79,8 @@
         </toc-element>
         <toc-element toc-title="Software Engineering">
             <toc-element topic="00_Introduction.md"/>
+            <toc-element topic="01_ImplementingForMaintainability.md"/>
+
         </toc-element>
 
     </toc-element>
diff --git a/Writerside/topics/04/Software Engineering/01_ImplementingForMaintainability.md b/Writerside/topics/04/Software Engineering/01_ImplementingForMaintainability.md
new file mode 100644
index 0000000..e69de29