The DEMO version only includes 4 pages:
http://computersimpleblog.org
http://computersimpleblog.org/the-best-data-rooms-on-the-market-and-how-to-decide-which-one-is-best-for-your-needs.html
http://computersimpleblog.org/how-to-use-data-room-software-for-a-legal-compliance-audit.html
http://computersimpleblog.org/how-to-handle-corporate-data-privacy-and-security-issues-with-the-help-of-data-room-for-due-diligence.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
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