How to Make Friends With the Dark

The individual or group credited with creating the main content of a product, such as a book, film, or other creative work. The value is a free‑text string representing the name(s) of the primary creator.

A list of the natural languages in which a product is available or supported.

The name of the publishing house or imprint that released the product, such as a book or audio edition.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.