manifest
Manifest lists all the files used to create the eBook.

The text content and table of contents are listed with the syntax shown. Alternately, you can list individual chapters here, as shown.

Example: 
<manifest>
 <item id="content" href="contents.htm" media-type="text/x-oeb1-document" />
</manifest>

attributes

id
Provides an element with a unique name within a single document. This is especially useful in works with extensive cross-referencing and linking, such as dictionaries, encyclopedias, or travel guides. Use of ids  simplifies linking and updates.
class
Affiliates an element with one or more classes.
style
Attaches a list of inline (name:value paired) CSS properties to a specific tag, for example: style="name:value;name:value"
Note: Media types other than "text/x-oeb1-css" will be ignored with a warning in a document of type "text/x-oeb1-document".

See also:

<item>