Update reference: 3 Date: 13/02/2007 Where Module 3, Chapter 2.2, Comment 1 What: Explanation of the new way to handle element determination failure including moving the threshold. Update reference: 2 Date: 19/12/2006 Where Module 3, Chapter 4 What: Added a picture of the detail window and two comments on possible confusions understanding the ISO grading system. Update reference: 1 Date: 19/12/2006 Where: Module 3, Chapter 1. Paragraph 7 What: Comment added to address the Sub Optimal Pack error message in the summary window. Includes a sample of a file that has a suboptimal pack error.