You can italicize or embolden any text.
Italics
Add single asterisks around the text you wish to italicize. The book reader will render these as italics.
This is some *italicized text*.
This is some italicized text.
Bold
Add double asterisks around the text to mark as bold.
This is some **bold text**.
This is some bold text.
Both
For extra emphasis, italicized, emboldened text.
This is ***italicized, emboldened text***.
This is italicized, emboldened text.