m Per Template:Start date/doc, it's "for use inside other templates (or table rows) which emit microformats. It should be used only once in each such template and never used outside such templates."
The wikibooks.org ___domain was registered on {{startJuly date|2003|07|19}}, 2003.<ref>{{cite web|title=Wikibooks.org Whois Record|url=http://whois.domaintools.com/wikibooks.org|publisher=DomainTools, LLC|access-date=22 January 2013|archive-date=23 January 2022|archive-url=https://web.archive.org/web/20220123190604/https://whois.domaintools.com/wikibooks.org|url-status=live}}</ref> It was launched to host and build free textbooks on subjects such as [[organic chemistry]] and [[physics]], in response to a request by Wikipedia contributor Karl Wick.<ref>{{cite web|title=Talk:Science Hypertextbook project|work=Wikimedia Meta-Wiki|publisher=Wikimedia Foundation|date=June 23, 2003|accessdate=October 1, 2022|url=https://meta.wikimedia.org/wiki/Special:PermanentLink/153077}}</ref><ref>{{cite mailing list|title=a spot for WP textbook devel|first=Karl|last=Wick|mailing-list=wikien-l@lists.wikimedia.org|publisher=Wikimedia Foundation|date=June 17, 2003|accessdate=October 1, 2022|url=https://lists.wikimedia.org/hyperkitty/list/wikien-l@lists.wikimedia.org/thread/CYNWNQMHZTBDWXLJEGEARN3AAQAP2V4L/}}</ref> Two major sub-projects, Wikijunior and [[Wikiversity]], were created within Wikibooks before its official policy was later changed so that future incubator-type projects are started according to the Wikimedia Foundation's new project policy.{{huh|date=May 2022}}
In August 2006, Wikiversity became an independent Wikimedia Foundation project.<ref>{{Cite web|url=http://mentalfloss.com/article/14633/wikipedia-now-serving-k-12-and-over|title=Wikipedia, now serving K-12 and over|date=2006-08-04|website=mentalfloss.com|language=en|access-date=2019-09-28|archive-date=2019-09-28|archive-url=https://web.archive.org/web/20190928193247/http://mentalfloss.com/article/14633/wikipedia-now-serving-k-12-and-over|url-status=live}}</ref>
