A relation is the line between two topics. The relation path style can be
  • curved
  • straight
  • rounded
  • or angled.
The path style is defined in the style sheet. You can change this with a custom style sheet, via Mind Map Style or per relation. Read more about that here. In free form layout drag a relation line to manually adjust the path. Use the relation toolbar to clear  the manually adjusted path. In an auto layout it's possible only to drag crosslink lines. Collapse/Expand and Hide/Show topics Note for smaller mobile devices: First enable “Draggable relation lines” in Preferences.