Text sizes: tiny very small small normal large very large huge
Text colors
Colorful underlines
Colorful strikethroughs
Superscripts and subscripts: 𝜀0 = 𝜔𝜔𝜔...
Letterspacing
OpenType font features: feast versus feast
Shortcuts: Monospace – Bold – Italic – Big – Small – Underlined – Strikethrough – Superscript – Subscript