When you select the magnify tool 
and the viewport in which to work, ABAQUS/CAE enters magnify mode, as indicated by the magnify cursor 
. When you drag the cursor to the right while in magnify mode, your view of the model expands within the viewport, and a rubberband line indicates the relative magnification. Similarly, when you drag the cursor to the left, your view of the model contracts, and a rubberband line indicates the relative reduction. The dragging action must start in the viewport, but you can continue to drag within the limits of your monitor. You can also drag repeatedly to achieve the desired view. The magnify tool recognizes only the horizontal component of your dragging motion, as indicated by the rubberband line. Consequently, you can achieve finer control by dragging diagonally across the screen, since this results in a smaller horizontal component of the cursor's motion than dragging the same distance horizontally.
Using the default mode of the magnify tool, as its name suggests, magnifies the view; as shown in Figure 5–8, the camera does not move with respect to the objects in the view. The magnification is caused by changing the field-of-view angle, the same method you use when changing the zoom on a stationary camera.
The alternate mode of the magnify tool, accessed by holding [Shift] while performing the manipulation, keeps the field of view constant and moves the camera towards or away from the objects in the view, as shown in Figure 5–9. Moving the camera in this manner is most useful when movie mode is on. Then your view is not limited; you can move the camera through the model such that any parts that you do not want to see are removed by the near or far planes or are actually behind the camera. If you are not using movie mode, the camera can move forward only until it reaches the outer limits of the model.If you lose track of your position, you can use the auto-fit tool 
to rescale the view to fit the viewport. Using the auto-fit tool also resets the camera target to the center of the model.
