diff -r 58bcb390c9e2 -r ebdd1d769158 client/README.md
--- a/client/README.md	Thu Mar 31 16:38:35 2016 +0200
+++ b/client/README.md	Fri Mar 18 14:15:23 2016 +0100
@@ -309,7 +309,7 @@
 * viewIndex=index: init the renkan with the indexed view. Negative index starts from the end of the list of views (viewIndex=-1 will load the last view). In case the view doesn't exist, the initial view (viewIndex=0) will be loaded.
 * view=offset-x,offset-y,zoom-level: Load a view with the given zoom and offset parameters
 * view=autoscale: force the view to be autoscaled when the renkan loads
-* idNode=id: highlight a node according to the given node id. 
+* idNode=id: highlight a node according to the given node id.
 
 ## Drop management
 
@@ -354,6 +354,7 @@
 ```json
 {
     "id": "f4d002b7-d4fd-486c-8898-6c6ceebc3354",
+    "schema_version": 2, #version of schema, latest is 2.
     "title": "Example of Renkan with movies",
     "description": "A long description",
     "created": "2013-03-18T11:32:40.253+01:00",
@@ -364,7 +365,11 @@
             "title": "Une femme mène l'enquête",
             "description": "La caméra suit la femme qui marche\nJeu avec la caméra qui se substitue au spectateur",
             "uri": "http://ldt.iri.centrepompidou.fr/ldtplatform/ldt/front/player/lyceehulst_3extraits/c8a61ee4-b33c-11e2-802c-00145ea4a2be#id=s_DCA8D184-EFC2-314B-0F6B-84043E8F9984",
-            "color": null,
+            "style": { #optional
+                "color": "#ff7f00", #line color, optional (null)
+                "thickness": 1, #thickness of the line, optional (1)
+                "dash": false, #dashed line, optional (false)
+            },
             "position": {
                 "x": -547.0499881440252,
                 "y": -221.5401229374163
@@ -373,9 +378,9 @@
             "size": 0,
             "project_id": "f4d002b7-d4fd-486c-8898-6c6ceebc3354",
             "created_by": "de68xf75y6hs5rgjhgghxbm217xk",
+            "type": "...",
+            "hidden": false,
             "shape": "circle",
-            "type": "...",
-            "hidden": false
         },
         ...
     ],
@@ -385,7 +390,12 @@
             "title": "",
             "description": "",
             "uri": "",
-            "color": "#ff7f00",
+            "style": { #optional
+                "color": "#ff7f00", #line color, optional (null)
+                "thickness": 1, #thickness of the line, optional (1)
+                "dash": false, #dashed line, optional (false)
+                "arrow": true,  #draw the arrow, optional (true)  
+            },
             "from": "node-2013-04-30-a81adec6694db5f4-0032",
             "to": "node-2013-05-08-72c911bafdf9932c-0001",
             "project_id": "f4d002b7-d4fd-486c-8898-6c6ceebc3354",