source: branches/tree/HELP_SOURCE/source/mode_setroot.hlp

#Please insert up references in the next lines (line starts with keyword UP)
UP      arb.hlp
UP      glossary.hlp
UP      mode.hlp

#Please insert subtopic references  (line starts with keyword SUB)
SUB     syncroots.hlp

# Hypertext links in helptext can be added like this: LINK{ref.hlp|http://add|bla@domain}

#************* Title of helpfile !! and start of real helpfile ********
TITLE           SET ROOT MODE

OCCURRENCE      ARB_NT and ARB_PARSIMONY: <S.ROOT> button in the left column
                F8 on keyboard

DESCRIPTION     The 'SET ROOT MODE' allows to position the root of the displayed
                tree to any of the edges.

                Click on the <S.ROOT> button to activate the 'SET ROOT MODE'.

                Set the root:

                        Move the cursor to any position along the desired edge
                        and click on the left mouse button.

                Use the right mouse button to search an optimal root, minimizing the
                distance to the farthest leaf on each side of the root.

NOTES           Short descriptions of the 'MODE' and the functions assigned
                to the mouse buttons are given in the fourth line of the
                'ARB_NT' window.

                The root is always placed to the middle of the edge.

EXAMPLES        None

WARNINGS        Be aware that changing the position of the trees root does affect the
                orientation of taxonomic groups.
                For details refer to LINK{keeled_groups.hlp}.

BUGS            No bugs known