Office and SharePoint 2007 User's Guide: Integrating SharePoint with Excel, Outlook, Access, and Word

3.7. Tracking Page Versions

By default, SharePoint does not activate versioning. In versionless mode, every change to a page updates the current version of the page. This mode uses the smallest amount of storage space for your site's pages. Whether your site maintains versioning for your pages or not, all visitors to your site can view the current major version and, depending on the Draft Item Security setting, minor versions of your page unless you require content approval. Only by using content approval can you guarantee that pages under revision remain hidden from your site visitors until you submit the page for approval and a content approver publishes the page.

If your SharePoint administrator decides to allow SharePoint to save version ...