Wild card searches are also supported. It can be used for forward
match search and backward match search. For example, "[BW] euro"
-matches words which begin with "euro". "[EW] shere" matches words
+matches words which begin with "euro". "[EW] sphere" matches words
which end with "sphere". Moreover, regular expressions are also
supported. For example, "[RX] ^inter.*al$" matches words which begin
with "inter" and end with "al".@footnote{Simplified forms, as