Datasheet

Chapter 1 • The Revit World
16
Object Selection
Revit has a few similarities to AutoCAD and MicroStation. One of those similari-
ties is the ability to perform simple object selection, and to be able to execute
common modify commands. For this example, we are going to mirror the two
16'–0" L-shaped walls to the bottom of the building:
1. Type ZA (zoom all).
2. Click the Modify button on the Design bar.
3. Near the two 16'–0" L-shaped walls, pick (left-click) and hold down
the pick button at a point to the right of the walls but below the long,
100'–0" horizontal wall.
4. You will see a window start to form. Run that window past the two
walls. Once they are highlighted, as illustrated in Figure 1.22, let go
of the pick button, and the walls are selected.
FIGURE 1.22: Picking a “crossing” window to select two walls
There are two ways to select an object: by using a crossing window or by using
a box. Each plays an important role in how you select items in a model.
Crossing Windows
In Revit, you can select items in one of two ways. A crossing window describes
an object selection method in which the window being placed only needs to
cross through the objects in order for them to become selected. A crossing win-
dow will always start from the right and end to the left. The crossing window,
when being placed, is represented by a dashed-line composition (see Figure 1.22).
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