classes implemented in language itself.
</OL>

I try to made part 1 (extension module implemented in C) as small as possible and used mostly as
wrapper for functions defined in <code>dybase.h</code>. And most of the interface is implemented in language itself.
So all such things as object caching, recursive loading, investigating object fields are implemented in 
target language and not in C. The main advantages of such decision is flexibility (it is easier to implement different 
strategies at this level) 