Scales selected vertices about the position of the 3D cursor.
Up/down left/right and back/front scaling factors can be adjusted with the help of modifier keys.
Click (press and release the left mouse button) without moving the mouse to place the 3D cursor at the coordinates you want to be the center of scaling. Click in a window and drag the mouse to the left or right to scale the selected vertices about the 3D cursor. Scaling starts when the mouse is moved after pressing the left mouse button.
Differential scaling can be applied by using the following modifier keys.
| Shift | expand in the front-to-back (Y coordinate) direction only |
| Ctrl | expand in the up-down (Z coordinate) direction only |
| Alt | expand in the left to right (X coordinate) direction only |
To scale selected vertices by a numeric factor, double-click to bring up the Scale dialog.