a single column records may be sorted by clicking on the header
to align the checks in ascending or descending order. That way species
can be sorted by their names or by the presence or absence of one
or multiple characteristics. The header of the currently sorted
column is displayed in a blue colour (figure 2). ..........
may be combined in groups, according to the names of species or
the presence or absence of
characteristics. The procedure of grouping is achieved by simply
clicking on the desired header and dragging it into the Grouping
Line on top of the Matrix. After
releasing the mouse button the header will be inserted and displayed
in a green colour (figure 3). Building groups divides the Matrix
in sections, containing concordant and non-concordant criteria.
can be grouped and sorted simultaneously, according to the user's