task	pconvert	= t_pconvert,
	istable		= t_istable,
	pexamine 	= t_pexamine,
	tbcrename	= t_tbcrename,
	tbkeycol	= t_tbkeycol,
	txconcat	= t_txconcat,
	txcalc		= t_txcalc,
	txdump	 	= t_txdump,
	txrenumber 	= t_txrenumber,
	txselect	= t_txselect,
	txsort 		= t_txsort