要約算法

History

Time	Change
2010-09-17 08:01:02+00:00	Created
2010-09-17 08:01:02+00:00	Associated with 4361
2014-11-23 04:55:45+00:00	Associated with 14280
2014-11-23 06:15:44+00:00	Disassociated from 4361