Start with the file
invent2.xml, which can be found in the 05-06 folder of the course download. Open this file in IE 5.x. If a
file is both well-formed and valid, you will see the fully tagged document with clickable Plus and Minus buttons that allow you to expand
and collapse the elements.
XML file in a browser
If a document is not well-formed or not valid, IE 5.x will give you information pertaining to the error and will not show the page until
all the error have been corrected.
Make any necessary corrections to the source code. To practice your own XML skills, don't try and open this file in the browser until you
have looked at it carefully and corrected all the bugs you can find. When you believe your file is both valid and well-formed, open it in the browser. If you missed a bug, IE 5.x will let you know!