Hi everyone This is my first post ! Does ROS have a typical 'Hello World'type of program ? (i.e. A benchmark beginners program, used to see if everything is working right (or not ! )) Many thanks Best regards Arkapravo -- Arkapravo Bhaumik Websites : http://3chevrons.blogspot.com/, http://mobotica.blogspot.com/ E-mail : arkapravobhaumik@gmail.com Twitter : @abhaumik Facebook : Arkapravo Bhaumik Skype : arkapravo