"SelectionSaveSpecial" is a front end token that opens the Save As dialog for saving a selection.

"SelectionSetFind" is a front end token that places the selected string into the Search for: field of the Find dialog.

"SelectTerminalWindow" is a front end token that opens a terminal window to the machine specified by a kernel name.

"ShowPageBreaks" is a front end token that displays page breaks on screen as they would be printed.

"SimilarCellBelow" is a front end token that creates a new cell of the same style below the current cell.

"StackWindows" is a front end token that arranges windows in a uniform overlapping stack on the screen.

"StyleDefinitionsOther" is a front end token that opens the Choose Stylesheet dialog.

"Subscript" is a front end token that creates a SubscriptBox and fills the base with a selection.

"SubsessionEvaluateCells" is a front end token that evaluates the selected cells in a kernel subsession.

"Superscript" is a front end token that creates a SuperscriptBox and fills the base with a selection.