The AddIndefiniteSum(g, f) command, a library extension mechanism, adds a summation definition related to the function g to the Indefinite function where f is a user-defined procedure which handles summands containing the function g.

For example, let f be a user-defined function g.  To add this information to the SumTools[IndefiniteSum][Indefinite] function, use AddIndefiniteSum(g, eval(f,1)).

The RemoveIndefiniteSum(g) command, a library extension mechanism, removes a summation definition related to the function g from the Indefinite function where f is a user-defined procedure which handles summands containing the function g.

For example, to remove the information from the SumTools[IndefiniteSum][Indefinite] function, use RemoveIndefiniteSum(g).