Tree.Simple
val node :
?ls:Num.t ->
?cs:Num.t ->
?arrow_style:arrow_style ->
?edge_style:edge_style ->
?stroke:Color.t ->
?brush:Brush.t ->
?pen:Pen.t ->
?sep:Num.t ->
?valign:Command.position ->
?halign:Command.position ->
Box.t ->
t list ->
t
a simple tree placement algorithm: align all subtrees horizontally , and place the parent node above. Default arrow_style is Directed
. Default edge_style is Straight
.