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Below the edit box is a Show preview button. Pressing this will show you what the article will look like without actually saving it. It is strongly recommended that you use this prior to saving. This allows you to check what the page will look like first and to check that you haven't made any errors. It also prevents the need for multiple saves. Saving the same article a large number of times in quick succession makes it harder for people to check what changes have been made, and clogs up the page history.

It is helpful, however, to save the page before moving, breaking apart, or combining sections of the article, if you have been making small edits to the article. The difference display is not good at showing paragraph moves, and will not display the small edits clearly if sections are then moved around.

Saving only once is also a way of avoiding edit conflicts, as people will not see the article on recent changes, and therefore they are less likely to try editing it at the same time as you.

If you are logged in, you can set your preferences to show the preview positioned before the edit box instead of after it. If you select this option, the preview will be displayed above the edit box when you click the Show preview button while editing a page.