After setup, you should see a little rainbow icon next to the plotter's name in the Chooser. Set up your document. You should see a LaserWriter 8 setup window. Select the correct Orientation . Make sure the documenent size is the same as the paper size that you have just chosen.
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In the same window, click the Options button. You should see a LaserWriter 8 setup window. Select the correct Orientation . Scan other attributes in other categories of this pull down menu to make sure they suit your needs. When you are ready to print, click the print button.