USE CASE
When creating a new page, the user wants to specify a CODE property (four digits) in the Create Page Wizard when creating pages based on a specific template. There is no need for a component here as the code value will not be displayed on the page. It will be used by a list component, a step higher up in the site hierarchy.
IMPLEMENTATION
How can I add a custom page (template) property/field to the Create Page Wizard in the WCM part of the system, http://localhost:4502/libs/wcm/core/content/sites/createpagewizard.html/content/yetanothersite.
the user sees additional fields, e.g. CODE field.