The child pages (ti ti-sitemap) dialog allows you to see a list of child pages of the current page. From this list you can reorder the pages, delete a page, copy an existing page or add a new page. You can also use this list to navigate to a page that might not be available in the menu. When copying an existing page, not only is the page copied, but also the page blocks, child pages, and child page blocks. What a time saver! Even though Rock will re-wire up any references between the new blocks and new pages, it is wise to double check your block settings to verify everything is what you expect.