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Entering Arguments
Left-click inside a module on the Desktop to open a dialog window where you set its arguments.
In this example, ReadImage has five possible arguments. The most important one, and the only required one, is “filename”: the name of the image to bring into the job.
When a dialog has a horizontal gray line, it separates the arguments into two groups. You must fill in the arguments above the line. When all required arguments are set, the red line inside the module changes to green.
Before you close the dialog, make sure the check box next to each argument you entered is checked. Otherwise, what you entered is ignored.
Every dialog also has a Help button (question-mark icon) that opens the module's instructions.