Specifying Runtime Prompts for Parameter Values
If you have streams where you might need to enter different values for the same parameter on different occasions, you can specify runtime prompts for one or more stream or session parameter values.
Parameters. (Optional) Enter a value for the parameter, or leave the default value if there is one.
Turn off these prompts. Select this box if you do not want these prompts to be displayed when you run the stream. You can cause them to be redisplayed by selecting the Prompt? check box on the stream properties or session properties dialog box where the parameters were defined. See the topic Setting Stream and Session Parameters for more information.