[NTG-context] style of last table row (on every page)

Hello, I'm forwarding a question about natural tables from our mailing list: How to make a different border on bottom of the last table row on every page? \setupTABLE[r][last][bottomframe=on] only works on last page, not on every page. I thought naively that \bTABLEfoot ... \eTABLEfoot could do a dirty trick, but apparently only the header gets repeated on every page: the footer does not. Mojca