Hi everyone If I am moving from Player/Stage/Gazebo to ROS/Gazebo, the big change is that in Player/Stage/Gazebo world files would work (i.e. gazebo pioneer2dx.world) however in ROS/Gazebo what works is, launch files - is there a tutorial for making launch files for the corresponding world files ? Regards Arkapravo -- Arkapravo Bhaumik E-mail : arkapravobhaumik@gmail.com Blogs : http://mobotica.blogspot.com/, http://3chevrons.blogspot.com/ Twitter : @abhaumik Facebook : arkapravo@facebook.com Skype : arkapravo