Two pairs of buttons control the kind of text matching in the searches that
you make. The first set (labeled "case differences") controls whether upper and
lower case must match. The second ("word endings") controls whether to ignore
word endings or not. It is possible to get a large query box, so that you can
easily do paragraph-sized searching. It is surprisingly quick to search for
large amounts of text.
For example, if the buttons ignore case differences and
ignore word endings are selected, the query
will be treated the same as
because the uppercase letter in "African" will be transformed to
lowercase, and the suffixes "n" and "ing" will be removed from
"African" and "building" respectively (also, "s" would be removed from
You can switch to an "advanced" query mode which allows you to combine terms
using AND (&), OR (|), and NOT (!). This allows you to specify more precise
queries. Finally, you can control the number of hits returned, and the
number presented on each screenful.