\[FilledDownTriangle] (Mathematica Character Name)

Unicode: 25BC. Letter-like form.

\[FilledRectangle] (Mathematica Character Name)

Unicode: 25AE. Letter-like form. Used in mathematics to indicate the end of a proof.

\[FilledSmallCircle] (Mathematica Character Name)

Unicode: F750. Alias: Esc fsci Esc. Letter-like form. Used as a dingbat.

\[FilledSmallSquare] (Mathematica Character Name)

Unicode: 25FC. Alias: Esc fssq Esc. Letter-like form. Used as a dingbat. Not the same as \[SelectionPlaceholder].

\[FilledSquare] (Mathematica Character Name)

Unicode: 25A0. Alias: Esc fsq Esc. Letter-like form. Used as a dingbat. Not the same as \[SelectionPlaceholder].

\[FilledUpTriangle] (Mathematica Character Name)

Unicode: 25B2. Letter-like form.

\[FilledVerySmallSquare] (Mathematica Character Name)

Unicode: 25AA. Alias: Esc fvssq Esc. Letter-like form. Used as a dingbat.

\[FinalSigma] (Mathematica Character Name)

Unicode: 03C2. Alias: Esc fs Esc. Greek letter. Used in written Greek when σ occurs at the end of a word. Not commonly used in technical notation. Not the same as \[Stigma].

\[FivePointedStar] (Mathematica Character Name)

Unicode: 2605. Alias: Esc *5 Esc. Letter-like form. Not the same as the operator \[Star].

\[Flat] (Mathematica Character Name)

Unicode: 266D. Letter-like form. Used to denote musical notes. Sometimes used in mathematical notation.