> Suppose I don't own the Commercial version of the most recent version of Livecode (I don't),
> but I hack the interface of the upcoming Open Source Livecode into something which other people like,
> would it be possible for them to use it with the commercial version?
sure, why not, as long as the "whatever" licence will be fullfilled :-)
Sorry, no real idea about all this license and legal stuff...
> [ Klaus Major, this may interest you ]
Because of the MetaCard IDE?
I passed the "MC PooBa Hat" some time ago to Ken Ray ;-)