XML files can be viewed in all web browsers.
That is, from your web browser, click on the "file" , "open file", select the XML file with ".xml" and click "OK".
So if the XML file is correct (well formed) will appear in the web browser, but may vary between browsers others, show the elements of XML with a symbol (-), if we want to hide the child elements that have, and the symbol (+) to display items that have children (if they are hidden at the time).
In any case, you can modify the XML file being displayed in the web browser.
To view the XML file being displayed in the web browser, without the symbols (+) or (-), we position ourselves on XML data file, and press the right mouse button and select "view source of the page" , that will show the XML as it is recorded.