Modularised engine, Metacard, and other daft thoughts.

[Richmond]

Further questions:

1. Will the stacks created with the O-S version be openable by the PAY 
version, and the other way round?

2. What's to stop somebody spending a few years developing something 
with the O-S version and then
     paying for the shortest possible licence (time-wise) to spin off 
commercial apps with protected code?

Richmond.