Am 08.11.2014 um 11:59 schrieb Fabrice <couvreur.fabrice@wanadoo.fr>:

Hi Wolfgang,
I want to number the second line of the first column a. then the third line of the first column b. …

\definelabel[TableRow][text=,headcolor=red,numberconversion=characters,numberstopper=.]

\starttext

\bTABLE[width=3cm]
  \bTR
    \bTD \TableRow\ text \eTD
    \bTD \eTD
    \bTD \eTD
  \eTR
  \bTR
    \bTD \TableRow\ text \eTD
    \bTD \eTD
    \bTD \eTD
  \eTR
\eTABLE

\stoptext

Wolfgang