Welcome to a three-part series on working with templates in the context of Full Site Editing. In Part 3, we will explore how Template and Template Parts can be configured for custom post types. We will also revisit Bock Templates that were introduced in Part 1, and create custom Block Templates for posts and the custom post type “books”. Finally, we will introduce the block locking API and how this can be used within templates to provide editing guardrails for clients and end-users.