When you record audio into Digital Performer, an audio file is created and it is stored on your hard disk. This is referred to as a “parent” audio file. A “soundbite” is an edited region of that parent file. When you work within the Graphic Editing window in DP you are editing the soundbites, not the parent file.
Because the editing is being done to the soundbites, and not the actual parent files themselves, Digital Performer is able to perform “non-destructive” editing. This allows you to cut, paste, copy, and shift the location of these soundbites without affecting the original audio recorded into the program.
While working in a Digital Performer file it is common to build a large catalog of soundbites that are associated to the file. For tips on how to organize and manage these files, see the technote on Soundbite Management.