Send To launches your email application to email a notebook (Windows only).

Ungroup Cells/Group Normally ungroups the selected sequence of cells.

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

ClosingAutoSave is an option for notebooks that specifies whether a notebook is automatically saved when it is closed.

Context[] gives the current context. Context[symbol] gives the context in which a symbol appears.

ContinuousTimeModelQ[expr] gives True if expr is a continuous-time StateSpaceModel or TransferFunctionModel object, and False otherwise.

ControllerInformation[] gives dynamically updated information on currently connected controller devices.

DeletionWarning is an option for InterpretationBox or TagBox objects that specifies whether a warning is issued if the box is deleted.

DiscreteDelta[n_1, n_2, ...] gives the discrete delta function \[Delta] (n_1, n_2, ...), equal to 1 if all the n_i are zero, and 0 otherwise.

DiscreteTimeModelQ[expr] gives True if expr is a discrete-time StateSpaceModel or TransferFunctionModel object and False otherwise.