Creative Solutions Corporation (CSC) sells business application software—accounting and book­keeping programs, blank business forms, inventory control functions, and the like—in different combinations, in different packages, at different prices, downloadable online. To complete a deal, a purchaser clicks on a button that, with reference to certain terms, states, “I agree.” What is this sort of agreement called? Do the parties have a binding, enforceable contract that includes the terms? Explain.