"TileWindowsTall" is a front end token that arranges all windows to fit on the screen, preferring height over width.

"TileWindowsWide" is a front end token that arranges all windows to fit on the screen, preferring width over height.

"ToggleDynamicUpdating" is a front end token that toggles automatic refreshing of a Dynamic.

"ToggleShowExpression" is a front end token that toggles between the Cell expression form and display form of a cell.

"Undo" is a front end token that undoes the most recent action.

"Ungroup" is a front end token that ungroups selected graphics.

Parallel Kernel Configuration opens a dialog to add, remove, and configure parallel kernels.

AutoOpenNotebooks is a global option that specifies which notebooks should be automatically opened when Mathematica is started.

BoxFormFormatTypes is a global option that specifies the list of typeset format types that are currently defined.

CellFrameColor is an option that specifies the color of the frame around a cell.