"DuplicatePreviousInput" is a front end token that duplicates the contents of the nearest input cell above.

"DuplicatePreviousOutput" is a front end token that duplicates the contents of the nearest output cell above.

"EvaluatorAbort" is a front end token that aborts the kernel operation in the specified kernel.

"EvaluatorHalt" is a front end token that interrupts the current evaluation and displays the evaluation stack.

"EvaluatorQuit" is a front end token that terminates the specified kernel.

"EvaluatorStart" is a front end token that starts the specified kernel.

"ExpandSelection" is a front end token that selects the next smallest subexpression containing a selection.

"ExplainBeepDialog" is a front end token that opens the Why the Beep? dialog with an explanation of why the front end produced a beep.

"FileNameDialog" is a front end token that opens a dialog for inserting a file path.

"FindDialog" is a front end token that selects the next occurrence of the text contained in the Search for: field of the Find dialog.