This function is intended primarily as a means of iterating round all the parameters in a Table. For this purpose, the number of parameters in the Table is given by the Nparameter attribute of the Table. This function could then be called in a loop, with the index value going from one to Nparameter.
Note, the index associated with a parameter decreases monotonically with the age of the parameter: the oldest Parameter in the Table will have index one, and the Parameter added most recently to the Table will have the largest index.
A blank string will be returned if this function is invoked with STATUS set to an error value, or if it should fail for any reason.