Each EQUEL statement generates one comment and a few lines of BASIC code. You may find that the preprocessor translates 50 lines of EQUEL into 200 lines of BASIC. This may result in confusion about line numbers when you are debugging the original source code. To facilitate debugging, each group of BASIC statements associated with a particular statement is preceded by a comment corresponding to the original EQUEL source. (Note that only executable EQUEL statements are preceded by a comment.) Each comment is one line long and informs the reader of the file name, line number, and type of statement in the original source file.