\[CapitalODoubleAcute] (Mathematica Character Name)

Unicode: 0150. Alias: Esc O'' Esc. Letter. Included in ISO Latin-2.

\[CapitalODoubleDot] (Mathematica Character Name)

Unicode: 00D6. Alias: Esc O" Esc. Letter. Included in ISO Latin-1.

\[CapitalOE] (Mathematica Character Name)

Unicode: 0152 Alias: Esc OE Esc. Letter.

\[CapitalOGrave] (Mathematica Character Name)

Unicode: 00D2. Alias: Esc O` Esc. Letter. Included in ISO Latin-1.

\[CapitalOHat] (Mathematica Character Name)

Unicode: 00D4. Alias: Esc O^ Esc. Letter. Included in ISO Latin-1.

\[CapitalOmicron] (Mathematica Character Name)

Unicode: 039F. Aliases: Esc Om Esc, Esc Omicron Esc. Greek letter. Not the same as English O.

\[CapitalOSlash] (Mathematica Character Name)

Unicode: 00D8. Alias: Esc O/ Esc. Letter. Included in ISO Latin-1. Not the same as \[EmptySet] or \[Diameter].

\[CapitalOTilde] (Mathematica Character Name)

Unicode: 00D5. Alias: Esc O~ Esc. Letter. Included in ISO Latin-1.

\[CapitalPhi] (Mathematica Character Name)

Unicode: 03A6. Aliases: Esc Ph Esc, Esc Phi Esc, Esc F Esc. Greek letter. Used in TraditionalForm for LerchPhi.

\[CapitalPsi] (Mathematica Character Name)

Unicode: 03A8. Aliases: Esc Ps Esc, Esc Psi Esc, Esc Y Esc. Greek letter.