Rebol Programming/Design Guide/Scripts start with a header

Headers provide a consistent way to to give your script an official title and filename.

Take advantage of them. They can save you and others time by explaining:


 * what a script does


 * who wrote it


 * when it was last modified


 * how it should be used


 * its change history, and more.

Headers also provide reliable search information for libraries, archives, and search engines.