Confused about ""Teaser Rates"", maximum annual interest rate increases and maximum interest rate for the term of the loan? This program is a version of a variable rate mortgage loan. Itwill run under Win 95, 98, Me, NT4, XP & 2000. This program demonstrates the worst-case scenario of a variable rate loan. This program also allows for an analysis of the effect of different loan rates applied over the length of the loan.