Thanks Pylon
I don't know if the D&D works on all major platforms but I guess that it does since the Micro:Bit was distributed to every 12yo schoolkid in the UK last year. It is supposed to make coding easy and fun to learn.
I would love to be able to write such an application myself but my understanding of the issues simply does not exist. I just feel that it should be a simple method of loading a program that methodologically very similar to running an executable on a PC.
Baldi