underline
bold
italic
[PRE:] class HelloWorld { public static void main(String[] args) { System.out.println("Hello World!"); } }
FONT size="15pt", color="blue", face="cursive"
BR(line break)
EM(Emphasis)
SPAN style="color:blue; font-size:16pt; font-weight:bolder; font-family: cursive"
STRONG
H 2O(Subscript)
20m 2(Superscript)