1. Select the bottom edge. | 2. Switch to the Move tool and tap the Option key so that a + sign appears. This means the edge will be copied before moving. Now click somewhere on the edge and drag upwards until the distance snaps to 1/4". |
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1. Select the stair step instance. | 2. Switch to the Move tool and move the cursor unti it snaps to the bottom right vertex. | 3. Click the mouse and move the cursor until it snaps to the bottom right vertex of the opening. Click again to position the object. |
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4. Now, using the Option key to make a copy, click on the lower right vertex again, and then on the upper vertex of the small wall face, so the copy is displaced 1" along and 1/4" upwards. | 5. Keeping the Option key held down, make more copies in the same way until you have about half a dozen stair steps. | |
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