Node Captions

Scutum Fidei - Variations
... Other variant forms of the diagram have the lettering on nodes and links with a yellow background color (instead of white), since "or" (i.e ... Forest, Guernsey uses a diagram with lettering on white or yellow nodes and links, placed on a green shield ... The outer node captions can be reduced to simple initials ("P", "F", and "SS") ...