If you accidentally delete a page, or a module you can go into the Recycle Bin and restore your page, or module. When you restore it, it will appear back in the section that it was deleted from. You can go back and continue to edit just as before. While logged into the site, you can click on "admin" in the toolbar at the top. On the admin page, you will find an icon that is entitled Recycle Bin. Click on it, choose page or module, find your page or module, and you can restore it.