Location of the Zoom Command
You can access it from the ribbon menu, View tab, Zoom title.
Usage Steps
Click the Zoom icon.
The mouse cursor takes the form of a magnifying glass and a hand.
Keeping the left mouse button pressed, moving the mouse forward at any point in the drawing.
Approach the point, move away from the point if the mouse is moved backward.
If the ESC key is pressed on the keyboard, the command is exited.