World: r3wp

Btw. COPY is by defauit deep in World (contrary to REBOL), and World 
will support deep copying of cyclic blocks, which gives a stack overflow 
error in REBOL.

no cyclic error in R3 IIRC (it was fixed in some alpha).

In one of 114 alphas :-)

Maxim, the fix was requested for R3 but not yet implemented, or planned.

hum... strange I feel like it was fixed, since at some point, R3 
coudn't make objects which I required, then, when Carl did the whole 
copy/make makeover, I was able to start using R3 because of deep 
copying issues being resolved ... maybe it was not completely fixed.

I don't think that was about cyclic structures

yes.. definitely but I think Carl may have only fixed it for cyclic 
Objects references.