user_guide.md

 * [How to install] (user_guide/how_to_install)
-* [How to execute] (user_guide/overview)
+* [Executables] (user_guide/executables)
 * [Configuration file: General section] (user_guide/section_general)
 * [Configuration file: Domain selection] (user_guide/section_domain)
 * [Configuration file: Inventories selection] (user_guide/section_inventories)