Notice the name property for this field. It has the value
This is the name of the property to which the content of this field will be written when the scaffold is used to create a page. The property is stated as a relative path from the node representing the page to be created. It specifies the property text, below the node text, which is below the node par, which is itself a child of the jcr:content node below the page node.
This defines the location of the content storage for the text that will be inputted into this field. However, we also need to specify two more characteristics for this content:
- The fact that the string being stored here must be interpreted as rich text, and
- which component should be used to render this content to the resulting page.
Note that in a normal component dialog you would not have to specify this information because it is implicit in the fact that the dialog is already bound to a specific component.
To specify these two pieces of information you use hidden fields. Click on the first hidden field Dialog > Tab Panel > Text > Hidden, like this: