Where PowerPoint Templates are Stored?

If you use PowerPoint templates to prepare your presentations you may be interested to know where the PPT or PowerPoint templates are stored in the hard drive.

Accordingly to Microsoft, and the articled published here How to manage templates in 2007 Office programs and in 2010 Office programs, PowerPoint templates are stored under this folder in Windows 7: C:\Users\\AppData\Roaming\Microsoft\Templates

But you can change the default location for PowerPoint templates if you need. How to change the location in which templates are saved?