Interfaces encapsulate Web service operations and declare the message types that they produce and consume. Interface records provide technical templates that come in handy when planning to connect to or implement a Web service.
If you are not already in the Search control, click the Search tab.
In the List column click the Interfaces link. The Browse WSDL Interfaces control will load. This control simply contains a list of WSDL Interfaces that you can sort and filter. Under most user profiles this will default to the common view.