Items posted on this page are either thought to be "of interest" in general
and not therefore easy to categorise, or, they have been moved from other
pages because they are outdated and now simply a reference point. In
this respect users must bear in mind that these documents may be old and out
of date in some sense, or they are intended to have no other value than that
they might be interesting reading and provide information on areas of
activity which we engage with but don't know much about.
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