Best way for XML input?

Hi,

I am trying to use CKEditor as my XML Editor. However, since XML is structured I don't want tags be messed.

For example:

Right:

<book>

<title>Wuthering Heights</title>

<price>32.00</price>

</book>

Wrong:

<book>

<title>Wuthering Heights<price>32.00</price></title>

</book>

In the second block the <price> tag is nested inside the <title> tag, a situation which is unwanted. What is the best way to achieve this? Thanks alot.