\[HorizontalLine] (Mathematica Character Name)

Unicode: 2500. Alias: Esc hline Esc. Letter-like form. Extensible character. Thickness can be adjusted using the SpanThickness option in StyleBox.

\[LongDash] (Mathematica Character Name)

Unicode: 2014. Alias: Esc -- Esc. Letter-like form.

\[MeasuredAngle] (Mathematica Character Name)

Unicode: 2221. Letter-like form. Used in geometry to indicate an angle, as in the symbol ∡ ABC.

\[NeutralSmiley] (Mathematica Character Name)

Unicode: F722. Alias: Esc :-| Esc. Letter-like form.

\[OverBrace] (Mathematica Character Name)

Unicode: FE37. Alias: Esc o{ Esc. Letter-like form. Extensible character.

\[OverBracket] (Mathematica Character Name)

Unicode: 23B4. Alias: Esc o[ Esc. Letter-like form. Extensible character.

\[OverParenthesis] (Mathematica Character Name)

Unicode: FE35. Alias: Esc o( Esc. Letter-like form. Extensible character.

\[ReverseDoublePrime] (Mathematica Character Name)

Unicode: 2036. Alias: Esc `` Esc. Letter-like form.

\[ReversePrime] (Mathematica Character Name)

Unicode: 2035. Alias: Esc ` Esc. Letter-like form. Used in an overscript position as a grave accent.

\[RightAngle] (Mathematica Character Name)

Unicode: 221F. Letter-like form. Used in geometry to indicate a right angle, as in the symbol ∟ ABC.