To Specify a Boundary-defining Shape

From the Print Styles dialog, select the Fence tab.
Click Define from shape.
The Define from shape dialog opens.
(Optional) In the Search section, turn off the Master File and/or References settings to limit the search for the boundary-defining shape.
By default, Print Organizer searches each master model and all of its references to find the boundary-defining shape. You restrict the search to specific references by typing their logical names (for example, "border") or filenames (without drives or folders, for example, "border.dgn") into the References list box. Reference filenames may be literals or regular expressions.
(Optional) In the Shape properties section, you can restrict the search to specific levels by typing the level names into the Levels list box. As with references, level names can be regular expressions. To limit the search to a specific color, weight, or style, specify the color, weight, or style.
(Optional) Turn on Create one print definition for each matching shape.