Autodesk 24108-051400-9000 - AutoCAD Revit Architecture Suite 2008 User Manual page 493

detail is needed in plan view. For example, display configurations intended for plotting at small scales, where details
of objects might be obscured, often use the Nominal display representation.
Default Display Representations
The display representations available for an object and the names of those representations are based on the ways that
you might need to view the object. Display representations can include different components of an object or additional
display options.
For example, the display properties of stairs in the Plan display representation include settings for break marks and
other stair symbols. Break marks appear only in 2D Top view drawings, so other display representations, such as Model
and Elevation, do not contain settings for break marks. Similarly, objects that never display break marks do not have
settings for them in their Plan display representations.
Plan display representation for stairs includes options for break marks
Customizing the Display of an Object
If you do not use materials to control display, you customize the appearance of an object by changing its display
properties for the display representation. For example, you can turn off the door swing in the Plan display representation;
specify whether the swing is straight or an arc; specify the percent open; or change the layer, color, and linetype of the
swing.
To change the display of an object, you specify how changes are applied to the instances of the object in the drawing.
You do this by specifying the source of the display properties for the selected display representation.
To apply the changes to the default display properties of the object, you customize the drawing default settings.
The changes affect all instances of the object in the drawing.
Drawing default display properties affect all instances of an object
To apply the changes to all instances of the object that have the same style, you override the drawing default
settings with the display properties of the object style.
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