description: "Objects carry default attributes, which you can extend with tags, frontmatter, attributes and other metadata." references:

• plugs/index/frontmatter.ts
• plugs/index/attribute.ts

Metadata is data about data. Most objects have a set of default attributes that can be augmented in a few additional ways:

• Tag: to tag the object (and add to the tags attribute directly)
• Frontmatter: at the top of a Page, a YAML encoded block defines additional attributes
• Attribute syntax: inline key-value pairs within your content