An exception that is thrown by PowerBuilder components, which can't generate arbitrary user exceptions.
exception PBUserException
{
string message;
};
A sequence type used to indicate null values for IDL operation parameters. This NULL sequence will have a slot for the return value and for each parameter. The first slot will always be reserved for the return type even if the return type is "void", subsequent slots will correspond to the parameters in the order in which they appear in the parameter list. There will be no slot for the NULL sequence parameter itself. For simplicity's sake the NULL sequence parameter will always be "inout". It will be the final parameter.
typedef sequence < boolean > NullValues;