This paragraph will illustrate the use of italics and the use of bold. They can be nested together by using both: this is bold and italics. Note that since I opened bold first and italics second, I should close italics and then bold. This is emphasis which is used like italics and strong which is used like bold. Be sure to look at the source code to see how it is written.

25² = 625

101₂ = 5

This is big and this is small