· Shift key - Extends the selection of points. Without the Shift key, you can only select one point at a time. With the Shift key held down, if you select a point that is already selected, that point becomes deselected.
· Command key (Macintosh) or Ctrl key (Windows) - Use to drag out collapsed direction handles. Without this modifier key, the point moves instead of the handles.
· Option key (Macintosh) or Alt key (Windows) - Used to hinge direction handles so they can be moved independently.
· Option key (Macintosh) or Alt key (Windows) - While in 2-D Reshape, this key can also be used to add a point to a line. Hold down the Option or Alt key; when the cursor intersects the line, click to add a point.
· Command + Shift keys (Macintosh) or Alt + Shift keys (Windows) - Allows you to move the selected vertex point perpendicular to the active grid. (2-D regions must reside on a single plane, so individual vertex points cannot be moved perpendicular to the grid.)