Image shows the (Resource) Types page of the API Designer where you define resource types. The top of the image shows the icons for Export Raml Document and the Enter RAML Source Editor Mode. Below the buttons is the New Resource Type button.
Below the New Resource button are the Delete Method (X) button, the Type Name and the Usage text fields. Next to the usage field is the link to the resource type definition page. The bottom of the image shows the Description field.
The function of these fields are described in the surrounding text.