You use a sitemap to encourage Google or other search
engines to more frequently and efficiently index your
website.

For overview information about Google sitemaps see:
mindprod.com/jgloss/google.html#SITEMAPS

For overview information about this utility see:
mindprod.com/jgloss/google.html#SITEMAPUTILITY.

You use this sitemap utility because it is so quick you can
use it before every upload so that your sitemap is always
100% up-to-date, always ready for whenever opportunity knocks,
in the form of the Google spider.

This approach in orders of magnitude quicker than actually
spidering the site yourself with a tool like Xenu or
GSiteCrawler. With the sitemap utility, you can prepare a
fresh sitemap in a couple of seconds.

To speed spidering, and ensure the most important files get
spidered frequently, Google has created a system where you
leave a compressed catalog of all your files on the website
for it to find. The program creates that file.
google.com/webmasters/sitemaps/docs/en/faq.html

For it to take effect, you must upload the generated compressed
sitemap.gz file to the root directory of your website and
you must one time register the name of the file with Google
so they will know to look for it. The file can be used by
all search engines, not just Google, so long as they know to
look for it. It might be wise to put a link to it somewhere
on your website so all the search engines could in theory
find it without help.

To use the program, you must configure five files:
1. sitemapconfig.properties
2. files.csv
3. directories.csv
4. includes.csv
5. excludes.csv