The standard library planar_graphtree_traits package is part of the graph-visualization support infrastructure.
The planar_graphtree_traits package currently has no explicit api.
The planar_graphtree_traits package source code is in src/lib/std/dot/planar-graphtree-traits.pkg.
See also: planar_graphtree package.
The above information is manually maintained and may contain errors.
api { Edge_Info = {arrowhead:List(xgeometry_float::Point ),
bbox:xgeometry_float::Box,
points:List(xgeometry_float::Point )};
Graph_Info = {fontsize:Int, graph:?.ag::Traitful_Graph,
graph_bbox:xgeometry_float::Box};
Node_Info = {base:?.ag::Node, bbox:xgeometry_float::Box,
label:String, position:xgeometry_float::Point,
shape:dot_graphtree_traits::Shape};
};