(c) In this chapter, the “"practice of law” does not include the design, creation, publication, distribution, display, or sale, including publication, distribution, display, or sale by means of an Internet web site, of written materials, books, forms, computer software, or similar products" "if" the products clearly and conspicuously state that the products are not a substitute for the advice of an attorney. This subsection does not authorize the use of the products or similar media in violation of Chapter 83 and does not affect the applicability or enforceability of that chapter.