This document contains a history of this page, from the current version to the earliest one available.
| Version | Name | User | Date | Time | |
| current | Perl | ps1.sec.co.jp | 4 December 2001 | 11:51 am | |
| Perl | micro | 28 April 2001 | 8:16 pm | ||
| Perl | micro | 28 April 2001 | 7:44 pm | ||
| Perl | comm | 5 April 2001 | 2:35 am | ||