Easy way to implement custom runtime?

[Kaylan]

Does anyone know of an easy way to figure out how a runtime 
feature should be implemented from reference errors emited at 
compile time? I seem to be doing really well with compiling 
runtime free applications but when i need to implement a runtime 
feature theres not much info to work with. Like whats the 
compiler expecting? Function, class, pointer to something???? I 
could use the default runtime source for reference but how do i 
know what to look for?

There should be a section in the library reference about the 
compiler referencing system. In my opinion that would boost the 
useability of D in general by a LOT.

Any and all thoughts are welcome, thanks.