comments are written with # -- anything after a # is ignored, until the end of line
reverse-comments are written with ^C -- anything before the two-character sequence ^C is ignored, until the beginning of the line

comments are written with # -- anything after a # is ignored, until the end of line
reverse-comments are written with ^C -- anything before the two-character sequence ^C is ignored, until the beginning of the line
like how when you're readlineing you press <c-c> and it displays ^C and aborts the line