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