diff --git a/elements_definition.md b/elements_definition.md
index 26c2de2..98a1326 100644
--- a/elements_definition.md
+++ b/elements_definition.md
@@ -35,4 +35,12 @@ Attribute:
     * master / slave
         * kindInformations
     * simple / master / terminal
-        * elementInformations
\ No newline at end of file
+        * elementInformations
+
+## uuid
+`<uuid uuid="{0d6a4894-51d4-44ac-9279-290fe336798f}"/>`
+* Uuid used to compare two elements 
+## names
+## elementInformations
+## informations
+## description
\ No newline at end of file