United States Constitution off-line study aid. The free download version is perpetually licensed and has interactive search and indexing features with over 100 pages of rights commentary which compares/contrasts the US Constitution with 5 other historically significant rights documents. You can review, edit, print included commentary or produce your own using the program's features. ALL program features are available in free download version. No time or useage limit is imposed. Enhanced version includes answers to challenges and other challenges.