Shape Key

Shape Key Editor

Shape Key Editor is used to adjust the animation timing of shape keys. These are stored inside a Action data-block. It lets you edit the value of relative shape keys.

This mode of the Dope Sheet using a similar interface as the Action Editor Mode with the distinction of the absence header filter controls and tools for channels.

Mask

In the Dope Sheet’s Mask Mode mask shape keyframes can be selected and edited. All Mask data-blocks in the blend-file are shown.