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Resizing Datum Extent Controls
1
Select a datum.
Notice that there is a control titled 3D that displays at the ends of the datum. With the 3D
designation, the datum is in Model Extent mode. This means that if you drag the control to
resize the datum extent, it changes the extent of that datum in all other parallel views, provided
those datums also have the 3D model extent control.
NOTE
When you select a datum, it is selected in all views in which it is visible.
Model extent control
Resize datum in all views
2
Drag the hollow circle 3D control at either end of the datum to the desired location.
Resize datum in a specific view only
3
Click the 3D control. It changes to display 2D, and the control changes from an open circle to
a filled circle. This means the datum is in view-specific mode. If you resize the datum, the change
occurs in that view only.
View-specific
extent control
NOTE
When you drag the filled circle, the open circle remains. This shows where the model (3D)
extent is. If you want to return to that extent, right-click the datum, and click Reset to 3D Extents.
If you drag a datum extent outside the crop boundary of the view, the control on the extent is always in
view-specific (2D) mode. You also cannot propagate its extents to other views.
If you move the 2D control of a datum on top of a 3D control, the 2D control becomes a 3D control.
Maximizing 3D Model Extents
A datum may be of a certain size, such that it is not visible in all views of the model. You can change the
3D model extents to intersect the boundary of the model, so that the datum will be visible in more views.
In the following example, the grid is not visible in the 2 section views of the model, because its 3D model
extents do not intersect either section view plane.
Resizing Datum Extent Controls | 1111
Содержание 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010
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