diff --git a/manual/edit.rst b/manual/edit.rst
index 2fe52496eb..5780e6dc97 100644
--- a/manual/edit.rst
+++ b/manual/edit.rst
@@ -467,3 +467,12 @@ Note that editing the styles does not actually make changes to the book
 contents, it only allows for quick experimentation. The ability to live edit
 inside the Inspector is under development.
 
+Arrange files into folders by type
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Often when editing EPUB files that you get from somewhere, you will find that
+the files inside the EPUB are arranged haphazardly, in different subfolders.
+This tool allows you to automatically move all files into sub-folders based on
+their types. Access it via :guilabel:`Tools->Arrange into folders`. Note that
+this tool only changes how the files are arranged inside the EPUB, it does not
+change how they are displayed in the Files Borwser.