@startuml
' convert it with additional command line argument -DRELATIVE_INCLUDE="./.." to use locally
!if %variable_exists("RELATIVE_INCLUDE")
  !include %get_variable_value("RELATIVE_INCLUDE")/C4_Dynamic.puml
!else
  !include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/v2.11.0/C4_Dynamic.puml
!endif

System(RelFrom, RelFrom)
System(RelShort, RelShort)
System(RelLong, RelLong)

System(RelIndexFrom, RelIndexFrom)
System(RelIndexShort, RelIndexShort)
System(RelIndexLong, RelIndexLong)

Rel_(Index(), RelFrom, To_Rel_UP, "A label", "-UP->>")
Rel_(Index(), RelFrom, To_Rel_DOWN, "A label", "A techn", "-DOWN->>")

Rel(RelFrom, "To_Rel", "A label")
Rel(RelFrom, "To_Rel_Tech", "A label", "A techn")
Rel_Back(RelFrom, "To_Rel_Back", "A label")
Rel_Back(RelFrom, "To_Rel_Back_Tech", "A label", "A techn")
Rel_Neighbor(RelFrom, "To_Rel_Neighbor", "A label")
Rel_Neighbor(RelFrom, "To_Rel_Neighbor_Tech", "A label", "A techn")
Rel_Back_Neighbor(RelFrom, "To_Rel_Back_Neighbor", "A label")
Rel_Back_Neighbor(RelFrom, "To_Rel_Back_Neighbor_Tech", "A label", "A techn")

RelIndex(Index(), RelIndexFrom, "To_RelIndex", "A label")
RelIndex(Index(), RelIndexFrom, "To_RelIndex_Tech", "A label", "A techn")

Rel_D(RelShort, "To_Rel_D", "A label")
Rel_D(RelShort, "To_Rel_D_Tech", "A label", "A techn")
Rel_Down(RelLong, "To_Rel_Down", "A label")
Rel_Down(RelLong, "To_Rel_Down_Tech", "A label", "A techn")
Rel_L(RelShort, "To_Rel_L", "A label")
Rel_L(RelShort, "To_Rel_L_Tech", "A label", "A techn")
Rel_Left(RelLong, "To_Rel_Left", "A label")
Rel_Left(RelLong, "To_Rel_Left_Tech", "A label", "A techn")
Rel_R(RelShort, "To_Rel_R", "A label")
Rel_R(RelShort, "To_Rel_R_Tech", "A label", "A techn")
Rel_Right(RelLong, "To_Rel_Right", "A label")
Rel_Right(RelLong, "To_Rel_Right_Tech", "A label", "A techn")
Rel_U(RelShort, "To_Rel_U", "A label")
Rel_U(RelShort, "To_Rel_U_Tech", "A label", "A techn")
Rel_Up(RelLong, "To_Rel_Up", "A label")
Rel_Up(RelLong, "To_Rel_Up_Tech", "A label", "A techn")

RelIndex_D(Index(), RelIndexShort, "To_RelIndex_D", "A label")
RelIndex_D(Index(), RelIndexShort, "To_RelIndex_D_Tech", "A label", "A techn")
RelIndex_Down(Index(), RelIndexLong, "To_RelIndex_Down", "A label")
RelIndex_Down(Index(), RelIndexLong, "To_RelIndex_Down_Tech", "A label", "A techn")
RelIndex_L(Index(), RelIndexShort, "To_RelIndex_L", "A label")
RelIndex_L(Index(), RelIndexShort, "To_RelIndex_L_Tech", "A label", "A techn")
RelIndex_Left(Index(), RelIndexLong, "To_RelIndex_Left", "A label")
RelIndex_Left(Index(), RelIndexLong, "To_RelIndex_Left_Tech", "A label", "A techn")
RelIndex_R(Index(), RelIndexShort, "To_RelIndex_R", "A label")
RelIndex_R(Index(), RelIndexShort, "To_RelIndex_R_Tech", "A label", "A techn")
RelIndex_Right(Index(), RelIndexLong, "To_RelIndex_Right", "A label")
RelIndex_Right(Index(), RelIndexLong, "To_RelIndex_Right_Tech", "A label", "A techn")
RelIndex_U(Index(), RelIndexShort, "To_RelIndex_U", "A label")
RelIndex_U(Index(), RelIndexShort, "To_RelIndex_U_Tech", "A label", "A techn")
RelIndex_Up(Index(), RelIndexLong, "To_RelIndex_Up", "A label")
RelIndex_Up(Index(), RelIndexLong, "To_RelIndex_Up_Tech", "A label", "A techn")

Lay_U(RelFrom, RelIndexFrom)
Lay_D(RelFrom, RelShort)
Lay_D(RelShort, RelLong)
Lay_R(RelLong, RelIndexShort)
Lay_L(RelLong, RelIndexLong)
@enduml