Many programs offer
ways to customize the interface for a user, and often a way to save these
preferences. Some programs only save these preferences for the current run
of the program, requiring the user to enter their preferences each time
the program is started. Others can save each user's preference, loading
the correct customizations based on the user's identity.
Example: In
Microsoft Word I can set the default font so everytime I open Word the
font and font size I use is the default.