The Key Controls toolbar for the Curve Editor contains tools for moving and scaling keys, drawing curves, and inserting keys.
Move KeysMove keys horizontally and vertically in the Key window. Choose a Move Keys tool variant from the flyout. See Move Keys.
Draw CurvesUse this to draw new curves, or revise existing ones by sketching directly on the function curve graph. See Draw Curves .
Insert KeysCreate keys on existing curves. See Insert Keys.
Region ToolThis tool lets you move and scale keys within a rectangular region. See Region Tool.
Key Controls Toolbar 
