Help - Line formats
From TreeGraph help
Line formats can be applied to any line element such as branches, nodes, legends, icon labels or a scale bar. You can change the line formats using the element formats-dialog.
Included Formats
Line color
The color of the line. All values in the RGB model are possible.
Line width
The width of the line defined in millimeters or points. (Note that a branch uses the line width of its parent node at the line start if the format "constant line width" is set.)