[NTG-context] split cells ? world lost !

Hi, hope the answer to my question is not too obvious: How do I split not only TABLE but cells? Please, have a look at this minimal: \starttext \bTABLE[split=yes,option=stretch] \bTR \bTD \input tufte \input knuth Hello world ... \eTD \bTD \input tufte \eTD \bTD \input knuth \eTD \eTR \bTR \bTD Test \eTD \bTD Test \eTD \bTD Test \eTD \eTR \eTABLE \stoptext (Hello) world lost? Thanks, Steffen