170 Printing with Mac OS 8.6 to 9.x
1. Select Double-Sided Printing, and select the Folded Booklet.
2. Click Margins. The Margins dialog box appears.
3. Specify the edge of the paper where the binding will be 
placed. You can choose from Left, Top, and Right.
Note:
When Portrait is selected as the Orientation setting in the printer 
driver, Left or Right binding positions are available. The Top 
binding position is supported when Landscape is selected as the 
Orientation setting.