Did you know that each document published on InterRegs.NET (that has been updated since 2006) includes a full update history, with links to pre-amendment and earlier versions, making it easy to identify when a specific change was made.
Click on the 'Details' tab of the document, and beneath the document information you'll find links to the document at each of its amendment levels. At every amendment level you can either click on the 'View' tab, which takes you through to the consolidated version of the document for that level, or, you can click on the 'View Changes' tab which opens the document on the first page where changes have taken place.
Try it out!