The most recent submissions are listed first.
| Digest Nr | Subject and Author |
 |
| 1999.05.09.09 | Duo-Art Roll-Tracking System, from Craig Brougher |
| 1997.09.25.10 | Variable-alignment Roll-tracking System, from Dick Merchant |
| 1997.09.07.11 | Strange Roll-tracking Systems, from Dave McNally |
| 1997.09.05.07 | Strange Roll-tracking Systems, from Darrell Clarke |
| 1997.09.03.09 | Roll-Tracking Device, from Dan Wilson |
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