DialogReturn[expr] closes a dialog window, returning the expression expr from the dialog.DialogReturn[] closes a dialog window, returning Null.

DiceDissimilarity[x, y] gives the Dice dissimilarity between Boolean vectors x and y.

Dimensions[expr] gives a list of the dimensions of expr. Dimensions[expr, n] gives a list of the dimensions of expr down to level n.

DumpSave["file.mx", symbol] writes definitions associated with a symbol to a file in internal Mathematica format. DumpSave["file.mx", " context`"] writes out definitions ...

EdgeLabeling is an option for GraphPlot and related functions that specifies whether labeling specified for edges should be displayed by default.

EdgeRenderingFunction is an option for GraphPlot and related functions that gives a function to generate the graphics primitives to use in rendering each edge.

Encode["source", " dest"] writes an encoded version of the file source to the file dest. << dest decodes the file before reading its contents. Encode["source", " dest", " ...

EndPackage[] restores $Context and $ContextPath to their values before the preceding BeginPackage, and prepends the current context to the list $ContextPath.

Evaluate[expr] causes expr to be evaluated even if it appears as the argument of a function whose attributes specify that it should be held unevaluated.

ExpandNumerator[expr] expands out products and powers that appear in the numerator of expr.