Fit the whole model in the 2D view

When the image no longer fits on the screen because it has become too big, return to the original size or include the whole image in the view again with the following steps:

1.       Click the Fit all button  in the upper right corner of the viewer. Alternatively, press the spacebar.

2.     Now both the window size and the zoom level are scaled to fit the image to the available screen space.