Physical Text Formatting

This is bold text.

This is italic text.

This is text is underlined.

This is fixed width text.

This is text is struck through.

This is normal text. This is bigger text.

This is normal text. This is smaller text.

X₁ is subscripted (1).

X². the squared (2) is superscripted

Fractions can be made with a mix of sup and sub: ¹₂