A supply chain is a system of organizations, people, activities, information, and resources involved in moving a product or service from supplier to customer. Supply chain activities transform natural resources, raw materials, and components into a finished product that is delivered to the end customer. In sophisticated supply chain systems, used products may re-enter the supply chain at any point where residual value is recyclable. Supply chains link value chains.

Source: http://en.wikipedia.org/wiki/Supply_chain
Source: http://en.wikipedia.org/wiki/Value_chain

EIDOS provides the rapid creation of supply or value chain visuals. These visuals can be created in parallel and are not bound by formal formatting constraints. Therefore, the use of different colors can provide the flexibility and coherence needed. In addition, comments and attachments can also provide added details and context. Lastly, the analyst can easily zoom in and out or split the upstream and downstream activities.