.tdf

File Type 1 Generic IconGuide Text Definition File
File Format Proprietary (Project Pluto)
Usage Open manually; may be referenced by an application
Rank ★ ★ ☆  Average
Description

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.

Open With
Windows

IconProject Pluto Guide

Updated 2007
File Type 2 Generic IconTitle Definition Format File
File Format Proprietary (321 Studios)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ★ ☆  Average
Description

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.

Open With
Windows

Icon321 Studios DVD X Copy software

Updated 2007
File Type 3 Generic IconXserve Test Definition File
File Format Proprietary (Apple)
Usage Open manually; may be referenced by an application
Rank ★ ★ ☆  Average
Description

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.

Open With
macOS

IconApple Xserve Remote Diagnostics

Updated 2007
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