diff --git a/install.rdf b/install.rdf
index bd350c18..8df20b0f 100644
--- a/install.rdf
+++ b/install.rdf
@@ -21,7 +21,8 @@
+ em:description="Show tabs like a tree."
+ em:homepageURL="http://piro.sakura.ne.jp/xul/_treestyletab.html.en"/>
+ em:description="Permette di visualizzare la barra delle schede in forma di albero"
+ em:homepageURL="http://piro.sakura.ne.jp/xul/_treestyletab.html.en"/>