If the middle mouse button is pressed in the 3D perspective view, the zoom command and the help scheme appear in the upper left corner of the perspective window.
Ctrl Middle Key Together
Pressing the keys and moving the mouse, the image rotates around the mouse movement.
While the Middle Key is Pressed
If the mouse is moved while the middle mouse button is pressed, the image pans in the direction of the mouse movement.
Mouse wheels move forward and backward
As the mouse wheel is moved, the image zooms in and out, with the mouse pointer centered.
When the home key is pressed on the keyboard, the image comes to the starting position.
Switches to the axonometric view. Switches to the initial perspective view when pressed again.