"DebuggerContinue" is a front end token that continues an interrupted evaluation until it reaches the next breakpoint.

"DebuggerFinish" is a front end token that makes the debugger ignore all breakpoints and finish the evaluation.

"DebuggerStepIn" is a front end token that stops the evaluation at the next possible stopping point.

"DebuggerStep" is a front end token that stops the evaluation at the beginning of the next expression.

"DebuggerStepOut" is a front end token that stops the evaluation at the end of the current stack frame.

"DebuggerToggleBreakpoint" is a front end token that converts all messages generated during the evaluation into breakpoints.

"DeleteGeneratedCells" is a front end token that deletes all cells in the notebook that have been produced as output by the kernel.

"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.