Text formatting tags determine how the text will appear. These are all paired tags.

You may want to bold, underline, or italicize text. To do this use the <b>, <u>, and <i> tags.

  <b>This will be bold</b>
  <u>This will be underlined</u>
  <i>This will be italicized</i>
You may want to affect just the size of the text by making it a header. Use the < hx> tag, where the x is a number from 1 (largest) to 6 (smallest).
  <h1>This is a the largest header text</h1>
There are several other tags that affect appearance, but these are the most common. 

Tags to avoid include:

<u> Hyperlinked text is commonly underlined. A user may be confused and try to click on underlined text.
<blink> Very annoying, this causes the text to flash, or blink, on and off.

To gain more control over text appearance, you can use the <font> tag. This tag allows you to control the face, color, and size of the text. The three attributes of the font tag are: face, color, and size.

<font face='Arial'>This text will use the Arial font face</font> This text will use the Arial font face
<font color='red'>This text will be red</font> This text will be red
<font size='1'>This text will be size 1, very small!</font> This text will be size 1, very small!
You can use all three attributes, or any combination of them, in the font tag. There is no point in using the font tag without attributes, as it would not do anything.

NOTE: The size attribute takes values from 1 (smallest) to 6 (largest). The sizes are the reverse of the header tags.

You may use any combination of these tags to achieve the desired appearance.