There are two ways to embed comments into your Turbo SQL statement comparable to the comments available in C++.
Either you may use /* and */ to enclose the comment or you use // to begin a comment that lasts until the end of the current line.
Example: /* This finds all requests that have come in in the period of time we are looking at. */
SELECT * FROM Request
// Requests from the time before the Euro came
WHERE Date < "1/1/2002"