about star-logo tutorial

[tajariol@dueffe.it (federico tajariol) (by way of Vanessa StevensColella)]

Hi everyone,
         many thanks to StarLogo development team for his tutorial, it's
very friendly and
 intutive....at least for beginners as am I!!!

        I only found one unvalid command, maybe , in the setup procedure....
         My Power didn't accept :
                              to setup
                              ca
                             crt 100
                             setc red
                             fd 10
                              if (random 100) <20 br setpc yellow>
                              end

and he preferred tis one:
                               to setup
                                ca
                                crt 100
                                setc red
                                fd 10
                                if (random 100) < 20 [setpc yellow]
                                end

         Apologizing for my poor English ( I am a French speaker!),
                          I hope this suggestion would be correct.