NLM Permanence Levels

hide

You are viewing a Web site, archived on 21:05:50 Oct 14, 2004. It is now a Federal record managed by the National Archives and Records Administration.
External links, forms, and search boxes may not function within this collection.

Definitions for the National Library of Medicine's Permanence Levels

Permanence Not Guaranteed:
The National Library of Medicine has made no commitment to retain this resource. It could become unavailable at any time. Its identifier could be changed.

Permanent: Dynamic Content:
The National Library of Medicine has made a commitment to keep this resource permanently available. Its identifier will always provide access to the resource. Its content could be revised, replaced or recaptured.

Permanent: Stable Content:
The National Library of Medicine has made a commitment to keep this resource permanently available. Its identifier will always provide access to the resource. Its content is subject only to minor corrections or additions.

Permanent: Unchanging Content:
The National Library of Medicine has made a commitment to keep this resource permanently available. Its identifier will always provide access to the resource. Its content will not change.