Active - When this box is checked in the Site Manager, the associated content (the page, article, file, blog entry, etc.) will display immediately. You can leave it unchecked to create content ahead of time and then check it when you want it to display.
Refresh - Sometimes when you're editing a page, you'll need to press the Refresh button ( ) in order to see the changes. Visitors to you section will not need to press this button.