The document provides code snippets for adding structured data markup to an e-commerce website using schema.org. It demonstrates how to add schema to product pages by marking up elements like the product name, description, image, URL, offers, price, availability and more. It also shows how to add schema for reviews, breadcrumbs and other pages on the site. The examples are intended to help provide rich snippets and semantic metadata to pages to help with search engine optimization and understanding of content.