@startuml

!include ./skinparams.puml

package "SGF" {
    !include sgflex.pumlc
    !include sgfyacc.pumlc
    !include ASTNode.pumlc
}

!include GameTree.pumlc

sgflex <- sgfyacc
sgfyacc -> "*" ASTNode
ASTNode "1" -> "1" GameTree

@enduml