After the System Administrator initiates a domain, a number of item resources (for example, hook-up items, links, and so forth) become available in the software. These items allow you to get started with building your domain without having to create all the required items from scratch. However, these resources are rather limited and do not provide for all your needs. You can enhance your item resources by appending add-ins to your domain. Add-ins are available on purchasing the appropriate Smart Instrumentation license. Contact your local Smart Instrumentation dealer or Customer Support for further information.