修复一些bug，新增一些功能

xiaoding721

2024-09-10 60a4f777fe6891b0ca85201ad1cf5567da16b16c

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Quintiq file version 2.0
#parent: #root
Method OnDelete
{
  TextBody:
  [*
    // Jacky CHAN May-26-2016 (created)
    // clear all interests
    traverse( this, SystemInterestedIn, interest )
    {
      interest.Delete();
    }
  *]
}