From Just Solve the File Format Problem
TTCODE is a transfer-encoding utility and format, developed by Tom Torfs. It converts a binary file to one that uses only printable ASCII and "high ASCII" characters.
An encoded file starts with ASCII "
TTCODE ". In practice, this is followed by another "
- There is a description of the format in the TTDECODE.C source code file included with the software.
- TTCODE v1.02 (DOS binary + source code)