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UP	arb.hlp
UP	glossary.hlp
UP	mode.hlp

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# 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		MOVE MODE

OCCURRENCE	ARB_NT and ARB_PARSIMONY: <MOVE> button in the left column

DESCRIPTION	The 'MOVE MODE' allows to change the topology of the
		displayed tree by moving subtrees.

		Click on the <MOVE> button in the left column of
                the main window.

		Move subtree:

                     Drag and drop a branch onto a target branch, to remove the branch
                     from the tree and insert it next to the target branch.

		Move Group Info:

                     Use the right mouse button to move the group information only.
                     When dropped onto another group, both group informations will be
                     exchanged.

SECTION         ARB_PARSIMONY specific

		Within the 'ARB_PARSIMONY' window, this mode can be used to test
		tree topologies with respect to maximum parsimony criteria by
		moving subtrees. The current parsimony value is shown after the
		'Current Par' prompt and can be compared with the 'Optimum Par'
		value of the initial tree (see LINK{pa_value.hlp}).


NOTES           If you move group info in a tree that contains LINK{keeled_groups.hlp},
                you'll probably encounter a special error message,
                stating that a group could not be moved because otherwise
                groups would partly overlap, which is impossible.

                A simple example would be the following tree (which has
                invalid group definitions):

                              G1 = !K1
                             /
                         R---
                             \
                              G2 = !K2


                If all tags are groups here, the original groups for '!K1' and '!K2'
                would be equivalent to

                 * K1 = R+G2
                 * K2 = R+G1

                which is impossible (because K1 and K2 share R, but none of
                them is completely contained in the other).

EXAMPLES	None

WARNINGS        It is recommended to copy the tree before using the 'MOVE MODE',
                to avoid problems caused by that bug:

BUGS		Undo 'Move Group Info' does not work (leads to loss of groupname).
                See http://bugs.arb-home.de/ticket/496

