add some comment

htdocs/fourn/class/fournisseur.commande.class.php

@@ -62,7 +62,10 @@ class CommandeFournisseur extends CommonOrder
 	 */
 	public $fk_element = 'fk_commande';
 
-    public $picto='order';
+	/**
+	 * @var string String with name of icon for myobject. Must be the part after the 'object_' into object_myobject.png
+	 */
+	public $picto='order';
 
     /**
      * 0=No test on entity, 1=Test with field entity, 2=Test with link by societe

htdocs/fourn/class/fournisseur.facture.class.php

@@ -63,6 +63,9 @@ class FactureFournisseur extends CommonInvoice
      */
     public $fk_element='fk_facture_fourn';
 
+    /**
+     * @var string String with name of icon for myobject. Must be the part after the 'object_' into object_myobject.png
+     */
     public $picto='bill';
 
     /**

htdocs/fourn/class/paiementfourn.class.php

@@ -46,6 +46,9 @@ class PaiementFourn extends Paiement
 	 */
 	public $table_element='paiementfourn';
 
+	/**
+	 * @var string String with name of icon for myobject. Must be the part after the 'object_' into object_myobject.png
+	 */
 	public $picto = 'payment';
 
 	public $statut;        //Status of payment. 0 = unvalidated; 1 = validated