Setting Options for Center Marks To set options for center marks: Click Options , and select Centerlines/Center Marks from the Document Properties tab. Under Center marks: Enter a value for Size. Size controls the length the center mark extends past the model edge and the size of the point symbol in the center. Enter a value for Gap. Gap controls the distance between the center mark and the extension line. Gap is available when Scale by view scale is cleared. Select or clear the check boxes for Scale by view scale, Extended lines, and Centerline font. Under Slot center marks, select Orient to slot or Orient to sheet and select a slot center mark location option. These settings determine how straight and curved slots are created. Select Detailing from the Document Properties tab. Under Auto insert on view creation, select or clear the check box for: Center marks - holes -part Center marks - fillets -part Center marks - slots -part Center marks - holes -assembly Center marks - fillets -assembly Center marks - slots -assembly When selected, center marks are inserted automatically into all appropriate circles, arcs, and fillets in new drawing views. Click OK. Parent topicCenter Marks Inserting Center Marks Manually Inserting Center Marks Automatically Adding to a Center Mark Set Editing Center Marks Dimensioning Center Marks Reattaching Dangling Center Marks Center Mark PropertyManager Example: Using Center Mark Dimensions Example: Using Centerline Fonts