Explanation of all caps, italics and underline

Text in all uppercase is significantly more difficult to read than lower and mixed case text. It’s best to write online in sentence case or mixed case, with proper nouns capitalized as well as the first letter of the first word. That is how people are used to reading printed material.

Print types such as italics and excessibve underline make it more difficult to differentiate among letters.

Use these print forms only to emphasize text.