This document contains a history of this page, from the current version to the earliest one available.
| Version | Name | User | Date | Time | |
| current | Eiffel | ps1.sec.co.jp | 8 November 2001 | 5:11 pm | |
| Eiffel | micro | 8 November 2001 | 2:02 am | ||
| Eiffel | vaio | 16 September 2001 | 2:31 pm | ||
| Eiffel | comm | 5 April 2001 | 2:37 am | ||