CompoundExpression (Built-in Mathematica Symbol)

expr_1; expr_2; ... evaluates the expr_i in turn, giving the last one as the result.

Compress (Built-in Mathematica Symbol)

Compress[expr] gives a compressed representation of expr as a string.

Decompose (Built-in Mathematica Symbol)

Decompose[poly, x] decomposes a polynomial, if possible, into a composition of simpler polynomials.

DeleteContents (Built-in Mathematica Symbol)

DeleteContents is an option for DeleteDirectory that specifies whether the contents of directories should automatically be deleted.

DelimiterFlashTime (Built-in Mathematica Symbol)

DelimiterFlashTime is an option for cells and notebooks that specifies how long in seconds a delimiter should flash when its matching delimiter is entered.

DiacriticalPositioning (Built-in Mathematica Symbol)

DiacriticalPositioning is an option for UnderscriptBox and related boxes that specifies how close diacritical characters are drawn to the base character.

DiracComb (Built-in Mathematica Symbol)

DiracComb[x] represents the Dirac comb function giving a delta function at every integer point. DiracComb[x_1, x_2, ...] represents the multidimensional Dirac comb function.

DirectoryStack (Built-in Mathematica Symbol)

DirectoryStack[] gives the directory stack that represents the sequence of current directories used.

DockedCells (Built-in Mathematica Symbol)

DockedCells is an option for notebooks that gives a list of cells that are to be displayed "docked" at the top of the notebook.

End (Built-in Mathematica Symbol)

End[] returns the present context, and reverts to the previous one.