A Scheme comment begins with a semicolon and extends to the end of a line. A multi-line comment can be constructed by starting each of the lines with a semicolon. Although one semicolon is enough to begin a comment, most Scheme programmers have the habit of using the number of repetitions of the semicolon character to indicate the scope or importance of a comment. Add a comment to sample.ss in which you give your name, the date, and a description of why you wrote the program stored in that file. Save the file and use the load procedure to load it into the Scheme interactive interpreter again.
Scheme treats a sequence of characters enclosed in double quotation marks as a string .