@merwok hey :)
There is currently no license! I'm fine with sharing snippets diffs & edits, but still working on formalising that. Ideally there would be a single simple license that covers (most of) /system, exports and later the c runtime source. The challenge is to do that in a clear way that allows creating tools/makers etc similar in nature to Picotron, but without functionally duplicating [large parts of] Picotron itself.