Book Schema added on this page
About This Page
This is a page that also has the schema of a Book.
Existing data such as featured image, page name and other mata data was linked with Booke schema properties.
Custom fields were created using uSchema for Book properties like numberOfPages, Author, ISBN.
Selective custom fields are also displayed using uSchema plugin. You can controll front-end visibility of each property. (Settings : Front end visibility)
A simple shortcode is used to display custom fields in this page.
You can also use action/filter hooks to show field.