Any text following an exclamation mark (`!') is treated as a comment and ignored. The exclamation mark introducing a comment may be either the first non-blank item in a line (`comment lines') or may follow other items (`in-line comments'). Comments are terminated at the end of the line.
An exclamation mark within a string terminated with quotes is not interpreted as a comment, but is considered part of the string.
CURSA Catalogue and Table Manipulation Applications