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

#Please insert subtopic references  (line starts with keyword SUB)
#SUB    subtopic.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           Bootstrap display settings

OCCURRENCE      ARB_NT/Properties/Tree options/Bootstrap settings

DESCRIPTION     The following boostrap related display settings are available:

                - 'Show bootstrap circles' toggles the display of bootstrap circles (only
                  available if the tree contains bootstrap values).

                - Hide bootstrap values below
                  Configure above which threshold bootstrap values are shown in the tree.
                  Generally, branches with less than 50% cannot be regarded as supported.

                - If 'Use ellipse' is active, ellipses instead of circles are drawn in
                  dendrogram tree.

                - 'Bootstrap circle zoom factor' allows to increase/reduce the size
                  of the boostrap circles/ellipse

                - 'Bootstrap radius limit' allows to limit the max. bootstrap circle/ellipse size.
                  If a bootstrap exceeds this limit its circle/ellipse will be drawn in a different
                  color.

NOTES           These settings will be managed together with other tree settings (use config
                icon in 'Tree settings' window)

SECTION         Bootstrap circle size

                The radius of the bootstrap circle depends on the bootstrap value itself,
                on the length of the branch from the node towards the tree root and on the
                configured zoom factor/limit.

                For a zoom factor of 1, a bootstrap value of ~44% will show a circle/ellipse
                which completely contains the whole branch.

                For increasing bootstrap values the radius goes towards zero; for smaller
                bootstrap values the radius will get infinite - that is why ARB uses
                a 'Bootstrap radius limit'.

                The formula used to calculate the (unlimited) bootstrap circle radius is

                        (1/sqrt(bootstrap/100) - 1) * 2*branchlength


EXAMPLES        None

WARNINGS        None

BUGS            No bugs known