cursors question

Hello,=20 a simple question about cursors in informix online 7.2 using powerbuilder as client. If a stored procedure uses an implicit cursor such as foreach select ...... return.... with resume end foreach The client uses a corresponding loop to fetch results. My (very simple) question is: When the procedure is executed, how are the results handled, i.e: are they sent to the client at once in a single operation, stored there = somewhere, and retrieved localy by the fetch loop in the application? in = this case, where are they stored? are they kept on the server and returned to the client on each (client) = fetch iteration? in this case, where are they kept? is each iteration in the foreach executed only as the client executes a = fetch? Thanks in advance Oscar Goldes