|Microsoft DirectX 9.0|
Microsoft® Visual Basic® application that previews video editing project files.
To use this application, drag a DirectShow Editing Services XTL file to the application window. The DirectShow SDK includes several sample project files. These are located in the Samples\Media folder, and have the file name extension .xtl.
Source: (SDK root)\Extras\DirectShow\VB Samples\Editing\XTLTestVB