A declaration for a content element which gets passed to the
unique id of the content element
The content element's type
Initial value of an input field, if applicable
Custom HTML attributes which get applied to the main element, e.g., the input element, if applicable
More members (properties)
Depending on the
type, there can be more members which can get used. For example, some types have a
label field for denoting the element's label and so on.
You can find more information about the different applicable properties in the type's documentation.