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A content type is a reusable collection of settings you want to apply to a certain category of content. Content types enable you to manage the metadata and behaviors of a document, item, or folder type in a centralized, reusable way. Use the following links to read more about creating, customizing, and updating site and list content types.
Provides information about the conceptual structure of content types, and the kind of content metadata they can contain.
Learn how you can use XML to encapsulate the custom information you need inside the content type for your solutions.
Provides information about the XML schema that defines each content type.
Discusses the object model members you can use to manipulate site and list content types programmatically.