When do you usually use PRE? If I use the PRE tag, it shows the space that I want to put without putting any <br> or <p> tags.

I was wondering if there is any differences.

http://www.w3schools.com/tags/tag_pre.asp

I was wondering if there is any differences

From what?

What I meat that:

If I use the page using pre:
<pre>
This is the page
this is the apge

this is the page
</pre>

Or using <br> and <p>:
<p>
this is the page<br>
this is the page<br></p>
this is the page

In the browser, it shows the same. I justn wondered...

Pre is short for preserve white space. It's normally used for displaying code. If you indent your document, pre will generally look terrible.

The pre tag to keep the formatting.