Rollo

Sorry for the dumb questions, I'm currently looking into FMX Native as a complete newbee. If above is NO: What exaclty is missing then, are these missing files the source-code of the specific IDE designer, needed to develop, or are there some binary files needed, or what else is missing then? Can I work still without those missing files, by recreating them anyhow like new iOS/Android headers, or will it come to a full stop, after a subscription ended? The whole FGX Native, to better understand, is this a complete separate, parallel foundation, not based on FMX, or is it building up from the FMX foundations, by just adding components? I have read about Flexbox/CSS support, does that mean the FGX foundation is based perhaps web/browser technology, instead of traditional FMX? Where can I find more information on the underlying basics of the system, if this differs much from FMX.