The u command removes from the trace table a given variable, or all variables, previously specified with the t command.
{flash.routine.name:} u {variable}
A minus sign displays for each trace table entry successfully removed from the table. The u command, followed by pressing ENTER, clears all trace table entries.
This removes the trace on the client number variable from the table.
*uclient.number
This removes all traced variables from the table.
*u