Walk through the process of adding an HTML document for responsive signing via the eSignature REST API.
Discover the utility of the UserInfo API call and see how it can help you make sure you're dealing with the correct user.
Find out how you can programmatically add a witness to your envelope using the DocuSign eSignature REST API.
Composite templates are the most extensible model for integration development and can save you much re-engineering time on app updates.