Forward declaring Types

Thanks FlameDuck. I managed to resolve the problem by making judicial use of Import - it's quite easy to get a cyclic import situation; a simple forward declaration would have avoided that and allowed me to keep the design I had arrived at. This is probably because I'm so used to writing C++, I'll see how I get on with BlitzMAX, since I've only just bought it tonight after a couple of days playing with the demo.

I'm so pleased to finally have Blitz with OOP, it's like being let out of prison (I imagine!)