Use your mouse and keyboard to position the scene in the window.

Note: The size of the green rectangle representing the ground and the length of the coordinate axes are arbitrary. You can position objects outside of the zone defined by the axes.

To zoom in and out

Zoom in (make scene bigger):

•Press the I key.

•Press and hold the Ctrl key and drag up with your mouse (click and hold the left mouse button).

•Scroll the mouse wheel up.

Zoom out (make scene smaller):

•Press the O key.

•Press and hold the Ctrl key and drag down with your mouse (click hold the left mouse button).

•Scroll the mouse wheel down.

To pan the scene

Move the scene up, down, left, or right:

•Press the Left, Right, Up, or Down (arrow) keys.

•Press and hold the Shift key and drag your mouse (click and hold the left mouse button).

To center the scene

Move the scene so that the coordinate origin is at the center of the window:

•Press the C key.