While there is no official "Portable" software version of the book (such as a standalone .exe), the term typically refers to the PDF/eBook format
: The book uses a unique step-by-step "programmed" method that requires you to actively solve problems as you go. While there is no official "Portable" software version
If you open any Stroud textbook, you will immediately notice a unique layout. The page is often split into frames. You read a small piece of information, answer a question in a space provided, and then check your answer immediately. This method: While there is no official "Portable" software version