Zoom All
You can set the drawing or the model visible entirely, in the working window. Elements that have been partially or entirely zoomed or panned, for example, displayed in the working window in their entirety.
Do either of the following:
- On the  tab, in the View group, click tab, in the View group, click Zoom All. Zoom All.
- Press the A key.
Note: 
  - Drawing -  Zoom All searches the drawing limits again. Zoom All searches the drawing limits again.
- Model -  Zoom all updates the model geometry in the working window, if the model has been modified. Zoom all updates the model geometry in the working window, if the model has been modified.
