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option to indexdump if it complains that it doesn't know the data
type of the values (this is the case with cdx at least). The possible
values are num, char and date and the call would be like

	./indexdump -type=num ~/path/index.cdx tag_name

(this -type option may not work with all index formats at the moment
-- will be fixed and patches always welcome).

You can use C<-ddebug> option to indexdump to see how pages are
fetched and decoded, or run debugger to see the calls and parsing.

=head2 Using the index files to speed up searches in dbf

The syntax for using the index files to access data in the dbf file is
generally

	my $table = new XBase "tablename";
		# or any other arguments to get the XBase object
		# see XBase(3)
	my $cur = $table->prepare_select_with_index("indexfile",