In remote run mode the Scratch project is saved and then converted into microcontroller code which can then be downloaded into the PICAXE microcontroller. Therefore the computer can be completely disconnected and the code now runs entirely on the microcontroller. This is normally used for building real-life projects e.g. robots, that you want to run autonomously (by themselves). - See more at: http://www.picaxe.com/Software/Third-Party/Scratch/#sthash.ucMQoQLD.dpuf