Document Processing 
You can use a document in the following ways in SAP Business Workflow:
Send it as a "mail" from a workflow
Create, display, or edit it in a workflow step
Add it to a workflow as an attachment
A text entered at definition time of a workflow and supplemented at runtime with information from the context of the workflow can be sent as a mail, and is displayed in the work item preview of the Business Workplace.
A document can be assigned to a workflow as an attachment. The recipients of the work items in this workflow can display this attachment in the work item preview.
A SAPscript document can be created, edited, or displayed in a workflow step. It can be supplemented with information from the task container.