diff --git a/inst/media/README.md b/inst/media/README.md
index bcf2f45..2c5d57b 100644
--- a/inst/media/README.md
+++ b/inst/media/README.md
@@ -1,3 +1,7 @@
 # MetaShARK / Media
 
 This folder contains multimedia files for multiple purposes. These must be either useful for the app, for the dev or any user-service purpose.
+
+## EAL diagram
+
+EAL_diagram was drawn using [Diagram Editor](https://www.diagrameditor.com/), a free service allowing the user to draw some diagrams with a wide variety of shapes (no ad, it is just a quick description of the tool and why the dev decided to work with it).