@startuml
scale 2

' anything after a quote is ignored (a comment).

/' anything between slash quote over several lines
potentially is also ignored '/

/' you can try to uncomment the following line to
see what happens'/

' left to right direction

object "Satiton : Melun" as mln
object "Satiton : Gare de Lyon" as gdl
object "Satiton : Maison-Alfort" as ma
object "Satiton : Vert-de-Maison" as vdm

object "Liaison 1" as l1
object "Liaison 2" as l2
object "Liaison 3" as l3

object "Ligne R" as lr
object "Ligne RER D" as rerd

object "PS : lR" as pslr
object "PS : RER D" as psrer

object "PAC : Melun | Vert-de-Maison" as pac



' describe the arrows

l1 o


@enduml