# this is a comment: commentexample1 !echo this is an echo: echoexample2 !verbose on # this is a comment with verbose on: verbosecommentexample3 !verbose off # this is a comment with verbose off again: commentexample4 # empty lines and lines with only whitespace should be ignored # directives are case insensitive, and should handle whitespace !ECHO echoexample5 !eChO echoexample6 !Verbose ON # verbosecommentexample7 !verBOSE off # commentexample8