In the new interface, the Undo menu has acquired Reset Puzzle, Reset Structures, and Auto Structures.
In the new interface in Foldit, the undo menu has moved from the horizontal menu bar of the original interface to the vertical menu on the left side of the screen.
Clicking the icon for the undo menu opens a separate panel, which can be resized and moved around the screen.
The new panel has the same features as in the original interface, with the addition of Reset Puzzle, Reset Structures, and Auto Structures. These added features were previously found in the actions menu of the original interface.