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2.
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Create a 2D object (such as a rectangle, circle, oval, polyline, polygon etc.). The 2D object must define an area; for example, a 2D line cannot be used. Position the 2D object on the design layer or existing uncropped viewport to delimit the area to be included in the new viewport. The fill of a viewport cropping object is always None; however, the pen style can be set from the Attributes palette.
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3.
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If the cropped viewport is being created from a design layer, select the 2D object. If the cropped viewport is being created from a sheet layer, select both the 2D object and the uncropped viewport.
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4.
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Select View > Create Viewport.
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5.
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An alert dialog box asks whether the object should be used as the viewport’s crop. Select Yes (or Yes Always to always use a selected 2D object as a crop object when creating viewports).
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6.
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The Create Viewport dialog box opens. Name the viewport and select the sheet layer to place it on. The remaining viewport parameters are initially set to be the same as the design layer properties (for design layers) or selected viewport (for sheet layers). Change the parameters as needed (see Creating a Sheet Layer Viewport from a Design Layer).
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7.
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Click OK.
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To hide the crop object, edit the viewport’s crop (see Cropping Sheet Layer Viewports) and set the object’s Pen Style to None. Alternatively, change the class of the crop object to invisible.
