\[CurlyPi] (Mathematica Character Name)

Unicode: 03D6. Aliases: Esc cp Esc, Esc cpi Esc. Greek letter. Not commonly used, except in astronomy.

\[DescendingEllipsis] (Mathematica Character Name)

Unicode: 22F1. Letter-like form. Used to indicate omitted elements in a matrix. Not the same as \[Continuation].

\[Diameter] (Mathematica Character Name)

Unicode: 2300. Letter-like form. Used in geometry. Not the same as \[CapitalOSlash] or \[EmptySet].

\[DiamondSuit] (Mathematica Character Name)

Unicode: 2662. Letter-like form. Sometimes used to indicate the end of a proof. Not the same as \[Diamond] or \[EmptyDiamond].

\[DotlessJ] (Mathematica Character Name)

Unicode: F700. Letter. Used when a j will have an overscript on top. May or may not match the ordinary j from the text font.

\[DoubleLongLeftRightArrow] (Mathematica Character Name)

Unicode: 27FA. Alias: Esc <==> Esc. Infix arrow operator. x ⟺ y is by default interpreted as DoubleLongLeftRightArrow[x,y]. Not the same as \[Equivalent].

\[ECup] (Mathematica Character Name)

Unicode: 0115. Alias: Esc eu Esc. Letter. Not included in ISO Latin. Used in transliterations of Cyrillic characters.

\[EmptyCircle] (Mathematica Character Name)

Unicode: 25CB. Alias: Esc eci Esc. Letter-like form. Not the same as the infix operator \[SmallCircle].

\[EmptyDownTriangle] (Mathematica Character Name)

Unicode: 25BD. Letter-like form. Not the same as \[Del].

\[EmptySet] (Mathematica Character Name)

Unicode: 2205. Alias: Esc es Esc. Letter-like form. Not the same as \[CapitalOSlash] or \[Diameter].