This object is used to create and

delete row in the table and control

if they are used. The values

that can be written are:

delete(3)...deletes the row

create(4)...creates a new row

modify(5)...modifies an exsisting row

If the row exists, then a SET with

value of create(4) returns error

'badValue'. Deleted rows go away

immediately. The following values

can be returned on reads:

noSuch(0)...no such row

invalid(1)...Setting it to 'invalid' has the effect of

rendering it inoperative..

valid(2)....the row exists and is valid