Wikipedia is a collaborative effort to produce an online encyclopedia.
Articles are written by whoever cares to write on the subject, and later edited and amended by other readers who find they
have something to add to the knowledge.
The
windmill page is currently a bit American biased - European mills are covered
in just 1 paragraph, compared to the 6 covering wind engines and the like in the USA. However, the article does link to
this site for further information!
The entry is also accompanied by a
fine photo of Pitstone windmill taken in
September 2002.
There are also foreign language versions of the page, of which the
French page looks quite informative.
Wikipedia entry for windmill