hp 28s - creating nested lists

[Werner]

Not quite ;-)
Only my last code is 100% correct as it works for N=0.
The other two should be:

Code:

NDUPN
\<< 0. OVER START OVER SWAP NEXT ROT ROT DROP2 \>>

and

Code:

NDUPN
\<< \-> N \<< 0. N START DUP NEXT DROP2 N \>> \>>

Cheers, Werner