I was probably waiting for that solution, as i filled all the CoalaWeb menu editor tab while you were modify your cwmenumeta.php
Just what I needed and works great,
PS : I just noticed that there's no canonical URL on Categorie pages (they appear on items pages). But here stop my knowloedge about that... Does a category page need a canonical link ?
Re PS : Well i just realize that this is a menu tab, so it obviously doesn't need Canonical link. Probably disturbed by my daughter when I wrote this