Tools > Edit this page - Freeze page

Freezing a page allows you to freeze the appearance of a page for all users who do not have write permission.  You can then continue to work on the page, but only those with write permissions will see the new version in progress. Everybody else will be shown the version you chose to "freeze".

To freeze a page you are working on, just choose Freeze Page from the Tools > Edit this page menu. Once done, the option disappears from the menu.

Unfreezing a page

Just click the Make Public button displayed at the top of the page's content next to the warning text: