TO back up the database that is currently open, use the "Back up Database" command on the save as tab in the backstage view. Back up database command allows you to save and create a repository for your back up.
Programmers/Coders write the instructions for a Computer.
The answer is layout.
In customizing slide elements, varied themes and layouts give the presentations in PowerPoint a unified and aesthetically pleasing look. To give your slides unique quality, you can modify the default theme and layout settings. One of the easier methods in creating a custom presentation is to change a theme for one or more slides.