You dont. Thats why you write code that explains itself. For higher level info you write documentation.

Microsoft be like

All these concepts like optional markupfiles, identifying objects by id, creating objects from markupfiles and WYSIWG editors also exist for the xaml(which is a Dsl) and C++ stack. Its just that microsofts usage and tools are crap like every other microsoft software

Thats how every GUI which is not immediate mode works. Are there any examples where it works different?

If it works, it works

Dynamic typing, special and unique syntax for every language feature, interpreter intrinsics

lIIl, IIIl, lIlI and IllI

I guess you ask for C++. There Type* can be null while Type& can’t be null. When it gets compiled Type& is compiled (mostly) to the same machinecode as Type*.