Headers are more accurately termed section headers. Using headers will enlarge and offset the text that you choose. Basically you are changing the style to bold and changing the size of your font.
Headers consist of two tags and always occur in pairs. They are of six sizes ranging from 1 to 6. 1 is the largest while 6 is very small. Usually you want to stay in the 1 to 4 range.
Here are examples of these headers:
<H1> </H1>
<H2> </H2>
<H3> </H3>
<H4> </H4>
<H5> </H5>
<H6> </H6>
Summary
ΓÇóHeaders change the size and style of your text.
Let's go to drill 2 and use the headers to spice up your text.