Change settings for the backward-compatible document library

On the Change Document Library Settings page, you can do the following:

Change the description of the document library, the contact name and e-mail address, and the version limit.
Find links to manage document library security, document profiles, and content sources.
Find a link to access the document library through Web folders.

Change the settings for a document library

Navigate to the Change Document Library Settings page by doing one of the following:
- On the SharePoint Portal Server Central Administration for Server server_name page, in the Component Configuration section, click Configure document libraries (Web Storage System-based) . On the List and Manage Document Libraries page, click Edit for the document library that you want to change.
- On the Site Settings page, in the Manage Portal Document Libraries section, click Change document library settings.
On the Change Document Library Settings page, in the Name and Description section, in the Document library description box, type the description for the document library.
In the Document Library Contact section, do the following:
1. In the Contact name box, type the name of the user or group to which you are assigning overall responsibility for the document library.
2. In Contact e-mail address box, type the e-mail address for the contact.
  The contact e-mail address can be that of an individual user or a group. This e-mail address is used as the reply-to address for e-mail messages sent by the document library during document approval routes.
To limit the number of previous major versions of a document to retain when the document is approved, select the Specify version limit check box, and then type a limit in the Number of versions to retain box.
Note This setting does not affect the number of minor versions retained.
Click OK.