There are 3 file types use the .TDF file extension:
1. Title Definition Format File
Contains setup instructions for backing up DVD movies; used by DVD X software such as DVD-X Copy, DVD X Platinum, and DVD X Copy Express; may be used to modify and fix DVD authoring problems and incorrect titleset selections made by the DVD X software.
321 Studios has ceased operations for legal reasons.
|321 Studios DVD X Copy software|
Updated: February 5, 2008
2. Guide Text Definition File
Contains definitions of datasets used by a Guide, a star charting and desktop planetarium program; may be included on the application CD or saved on the hard disk during a program installation.
Text definition files can be modified in a text editor.
|Project Pluto Guide|
Updated: July 7, 2008
3. Xserve Test Definition File
Stores test instructions and parameters for system tests run by Xserve Remote Diagnostics; used for testing the performance of components in an Apple Xserve server computer; can be edited in a text editor.
|Apple Xserve Remote Diagnostics|
Updated: June 18, 2008