## Updating Classifications

Classifications allow portal developers to group resources that are related intellectually, functionally, or thematically, using a hierarchical set of terms. This strategy provides portal users with a way of discovering resources (browsing) without prior knowledge of terminology (which might hinder searching). Classifications are displayed to users on the Browse Resources page, usually found on the main navigation bar.

No specific taxonomy or classification system is required. However, portal developers are strongly encouraged to make use of a standard taxonomy or map out their terminology and hierarchy before beginning to build a library of resources. Thoughtful planning will result in a less arbitrary classification scheme and minimize later editing to correct and/or to expand the scheme. Although all Classifications will be visible to resource editors in the Metadata Tool, a Classification will not appear to portal users until a resource has been assigned to it.

Classifications are usually a multi-level hierarchical vocabulary, and are displayed in a top-down fashion on both the Browse Resources and Add/Edit Classifications pages.

1. Log in to the portal with an authorized account and then go to the Metadata Tool Functions or Add/Edit Classifications pages.

2. Make sure that particular Classification vocabulary you wish to edit is selected (CWIS allows multiple Classification type fields).

3. Locate the Classification to be edited by 'drilling down' through the vocabulary, starting with the broadest or top level Classification. (Note: If there are more than 250 top level classifications, navigate through the Classifications via the alphabetical listing at the top.)

4. To edit a particular entry, use the ``Edit`` button next to each Classification. Make corrections and click the ``Save Changes`` button.

5. To delete a Classification, click the ``Edit`` button next to the appropriate term, and then click the ``Delete Classification`` button. The deletion will have to be confirmed.

Note: As shipped, the portal software contains sample data with Classifications qualified by the Library of Congress Subject Headings encoding scheme. Portal administrators may remove the LCSH qualification and/or add other refinements with the Qualifier Editor and the Metadata Field Editor.