code: public void init(BaseField field, String iMainFilesField)
      {
          super.init(field);
          m_iMainFilesFieldSeq = iMainFilesField;
          m_bReadMove = false;  // Don't move on read!
      }
docs: Constructor.
  @param field The basefield owner of this listener (usually null and set on setOwner()).
  param iMainFilesField The field sequence of the "changed by" field in this field's record.