diff --git a/dagre/dagre.d.ts b/dagre/dagre.d.ts
index ce389f2d7..fb5bd95d9 100644
--- a/dagre/dagre.d.ts
+++ b/dagre/dagre.d.ts
@@ -10,20 +10,24 @@ declare module Dagre{
 
     interface Graph {
         new (): Graph;
-        edges(): string[];
-        edge(id: string): any;
+        edges(): Edge[];
+        edge(id: any): any;
         nodes(): string[];
-        node(id: string): any;
+        node(id: any): any;
         setDefaultEdgeLabel(callback: () => void): Graph;
         setEdge(sourceId: string, targetId: string): Graph;
         setGraph(options: { [key: string]: any }): Graph;
         setNode(id: string, node: { [key: string]: any }): Graph;
     }
 
+    interface Edge {
+        v: string;
+        w: string;
+    }
+
     interface GraphLib {
         Graph: Graph;
     }
 }
 
 declare var dagre: Dagre.DagreFactory;
-
diff --git a/sigmajs/sigmajs-tests.ts b/sigmajs/sigmajs-tests.ts
index 10c6ce029..f28a9395b 100644
--- a/sigmajs/sigmajs-tests.ts
+++ b/sigmajs/sigmajs-tests.ts
@@ -23,6 +23,10 @@ module SigmaJsTests {
         s.refresh();
     });
 
+    sigma.canvas.edges['def'] = function() {};
+    sigma.svg.nodes['def'] = {create: (obj: SigmaJs.Node) => { return new Element(); },
+                       update: (obj: SigmaJs.Node) => { return; }};
+
     var N = 100;
     var E = 500;
     // Generate a random graph:
diff --git a/sigmajs/sigmajs.d.ts b/sigmajs/sigmajs.d.ts
index 62bee1980..d1c19730c 100644
--- a/sigmajs/sigmajs.d.ts
+++ b/sigmajs/sigmajs.d.ts
@@ -15,10 +15,17 @@ declare module SigmaJs{
         graphPosition(x: number, y:number): {x: number; y: number};
         ratio: number;
         readPrefix: string;
+        settings(setting: string) : any;
         x: number;
         y: number;
     }
 
+    interface Canvas {
+        edges: {[renderType: string]: (edge: Edge, source: Node, target: Node, ...a:any[]) => void};
+        labels: {[renderType: string]: (node: Node, ...a:any[]) => void};
+        nodes: {[renderType: string]: (node: Node, ...a:any[]) => void};
+    }
+
     interface Classes {
         configurable: Configurable;
         graph: Graph;
@@ -39,6 +46,7 @@ declare module SigmaJs{
     }
 
     interface Edge {
+        [key : string] : any;
         color?: string;
         id: string;
         size?: number;
@@ -74,6 +82,11 @@ declare module SigmaJs{
         nodes(ids: string[]): Node[];
     }
 
+    interface GraphData {
+        edges: Edge[];
+        nodes: Node[];
+    }
+
     interface Image {
         clip?: number;
         scale?: number;
@@ -87,6 +100,7 @@ declare module SigmaJs{
     }
 
     interface Node {
+        [key : string] : any;
         color?: string;
         id: string;
         image?: any;
@@ -149,7 +163,7 @@ declare module SigmaJs{
 
     interface SigmaConfigs {
         container?: Element;
-        graph?: Graph;
+        graph?: GraphData;
         id?: string;
         renderers?: Renderer[];
         settings?: { [index: string]: any };
@@ -160,10 +174,12 @@ declare module SigmaJs{
         new(container: string): Sigma;
         new(container: Element): Sigma;
         new(configuration: SigmaConfigs): Sigma;
+        canvas: Canvas;
         classes:Classes;
         misc: Miscellaneous;
         parsers: Parsers;
         plugins: Plugins;
+        svg: SVG;
     }
 
     interface Settings {
@@ -269,6 +285,17 @@ declare module SigmaJs{
         // Animation settings
         animationsTime?: number;
     }
+
+    interface SVG {
+        edges: {[renderType: string]: SVGObject<SigmaJs.Edge>};
+        labels: {[renderType: string]: SVGObject<SigmaJs.Node>};
+        nodes: {[renderType: string]: SVGObject<SigmaJs.Node>};
+    }
+
+    interface SVGObject<T> {
+        create: (object: T, ...a:any[]) => Element;
+        update: (object: T, ...a:any[]) => void;
+    }
 }
 
 declare var sigma: SigmaJs.SigmaFactory;