Hi,
I am building app which uses the most of graphic drawing/editing/updating capability in ArcGis I have feature where I can join(Include/exclude) graphics from different objects like in link below which is already available in ArcGis Desktop version.
ArcGIS Joining Graphics
Also look at HTML5 canvas globalCompositeOperation HTML canvas globalCompositeOperation Property
Can we achieve this using ArcGis JavaScript API.
- Ashish