Metadata is data about data. There are a few entities you can add meta data to:
* **page**: Pages have a default set of meta data built-in, but this can be expanded through mechanisms described below. The available metadata for a page is:
*`name`: The full name of the page
*`lastModified`: a timestamp (in ms since 1970-01-01) of when the page was last modified
*`perm`: either `ro` (read-only) or `rw`: this determines whether the editor opens in read-write or read-only mode.
*`contentType`: for pages always `text/markdown`
*`size`: the size of the file in bytes
*`tags`: A list of tags used in the top-level of the page (if any)
* **item**: Every list item appearing in a numbered, or unordered list is indexed and contains the following default set of metadata:
*`name`: The full content of the item minus attributes (see later)
*`page`: The page the item appears in
*`pos`: The offset (number of characters from the beginning of the page) where the item starts
*`tags`: A list of tags used in the item (if any)
* **task**: Every task defined in the space using the `* [ ] Task name` syntax
*`name`: The full task name/description
*`done`: Whether the task has been marked as done
*`page`: The page where the task appears
*`pos`: The offset (number of characters from the beginning of the page) where the item starts
*`tags`: A list of tags used in the task (if any)
* **tag**: Every tag used in the space
*`name`: The name of the tag (without `#`)
*`freq`: The frequency of the use of the tag
In addition, this metadata can be augmented in a few additional ways:
