Move in towards the center of the view
Select Zoom .
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Roll the middle mouse button forward to zoom in. Roll the middle mouse button backward to zoom out.
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Press CTRL + SHIFT + Z.
Magnify an area of the view
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Select Zoom Area on View Manipulation Toolbar at the bottom of the active view.
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Select and drag a fence around the area to fill the view.
Drag the zoom area off the edge of the window to pan the view as you define the zoom area.