DialogSymbols is an option for Dialog which gives a list of symbols whose values should be localized in the dialog.
DiamondMatrix[r] gives a matrix whose elements are 1 in a diamond-shaped region that extends r index positions to each side, and are 0 otherwise.DiamondMatrix[r, w] gives a ...
Diamond
(Built-in Mathematica Symbol) Diamond[x, y, ...] displays as x\[Diamond]y\[Diamond]....
DiceDissimilarity[x, y] gives the Dice dissimilarity between Boolean vectors x and y.
DictionaryLookup[patt] finds all words in an English dictionary that match the string pattern patt.DictionaryLookup[patt, n] gives only the first n words ...
DifferenceDelta[f, i] gives the discrete difference \[DifferenceDelta]_i f = f(i + 1) - f(i).DifferenceDelta[f, {i, n}] gives the multiple difference DifferenceDelta[f, {i, ...
DifferenceRoot[lde] represents a function that solves the linear difference equation specified by lde[a, n].
DifferenceRootReduce[expr, n] attempts to reduce expr to a single DifferenceRoot object as a function of n.
Differences[list] gives the successive differences of elements in list. Differences[list, n] gives the n\[Null]^th differences of list. Differences[list, {n_1, n_2, ...}] ...
DifferentialD[x] displays as \[DifferentialD]x.