Lab 4: Constrain the <Metadata> Element to be a Child

In lab 1 you created the NVDL script for planets-plus-dc.xml

However, the NVDL script that you created allows either <planets> or
<Metadata> to be the root element.  For this lab you want to
constrain the instance document to only allow <planets> as
the root element.

MOdify your NVDL script, planets-plus-dc.nvdl, to only allow 
<planets> as the root element.

After you have modified the NVDL script, open a DOS window, change
directory (cd) to this folder, and then type: run

Remember: No News Is Good News!  If all you see after typing "run" is "Done" 
then there were no errors in your NVDL script.


