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   Using altering tree functionality you can alter family tree graphical presentation for best viewing experience while maintaining app specific graphical coherent integrity.
   Altering tree introduced in v. 4.5.0 is in a pilot stage yet and we encourage you to alter the copy of the original family tree.
   To begin, you have to select one or two persons whose you want to move using double click or double tap. Then invoke popup menu using right mouse click or press and hold on touch screen and choose "Modify/Print Tree" menu item which, in turn, opens top app bar. Locate and select “Alter Tree” button on the right side of the top bar:
Alter Tree
Fig.1
Alter Tree
Fig.2

   Person’s template ready to be moved changes its background color to green and green dotted outline around is created. Press mouse or tap anywhere inside green dotted outline changes cursor shape, all the objects inside green dotted outline will follow your mouse as long as you keep it pressed:
Alter Tree
Fig.3

   It is mandatory for Family tree graphical integrity that graphical connections between family members either strictly horizontal or strictly vertical. If this rule is broken while moving line connecting person templates as well as “Alter Tree” button on the top app bar change color to red:
Alter Tree
Fig.4

   To keep graphical integrity every person template should be located inside imaginary grid cell, if this rule is broken green outline along with “Alter Tree” button change color to red; grid is showing when app in Alter tree mode, only:
Alter Tree
Fig.5

   It is mandatory for Family tree graphical integrity that graphical connections between family members either strictly horizontal or strictly vertical. If this rule is broken while moving line connecting person templates as well as “Alter Tree” button on the top app bar change color to red:
Alter Tree
Fig.6

   Tree graphical presentation rules require line connected two adjacent person templates to have minimum length of imaginary grid cell length. There are other mandatory rules to follow, like person templates non-overlap etc. App informs you about rules violation by changing color to red and showing corresponding tooltip over “Alter Tree” button. When “Alter Tree” button is green you click on it to redraw the tree the way you want:
Alter Tree
Fig.7

   To select and manipulate with group of more than two adjacent persons vertically located, like several siblings, you need to select upper-most and bottom-most ones then click “Alter Tree” button. To select and manipulate with group of more than two adjacent persons horizontally located, like several partners, you need to select left-most and right-most ones then click “Alter Tree” button:
Alter Tree
Fig.8

Alter Tree
Fig.9

   Right mouse click or press and hold on touch screen on any free of people templates Family Tree space dismisses top app bar and terminates tree altering.
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