If I enable preference Domino Designer → LotusScript Editor → Enable automatic recompilation of all dependencies, then it rebuilds every byte of LotusScript each and every save. So, for instance, I just made DecLan’s scoped variables a custom control, and edited the render= property on that CC and saved it. DDE rebuilt every byte of LotusScript. XPages don’t even support LS, and there are no LS editors even opened.- And it did nothing for the undeclared variable bug…