================================================================================
Simple connection
================================================================================
foo--bar
biz->baz
biz<->baz
biz<-baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
)

================================================================================
Formatted connection
================================================================================
foo -- bar
biz -> baz
biz <-> baz
biz <- baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
)

================================================================================
Connection with looooong arrow
================================================================================
foo ----------- bar
biz ----------> baz
biz <---------> baz
biz <---------- baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
)


================================================================================
Complex identifier connection
================================================================================
Foo Bar -- Biz Baz
-Bar-Foo- <- -Baz-Biz-

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
)

================================================================================
Inline connection
================================================================================
foo--bar->biz->baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
    (arrow)
    (shape_key)
    (arrow)
    (shape_key)
  )
)

================================================================================
Many connections inline
================================================================================
foo--bar;biz->baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
  )
)

================================================================================
Labeled connections
================================================================================
foo--bar: Question?
bar -> baz: Yes

--------------------------------------------------------------------------------

(source_file
  (connection
    (shape_key)
    (arrow)
    (shape_key)
    (label)
  )
  (connection
    (shape_key)
    (arrow)
    (shape_key)
    (label)
  )
)

================================================================================
Connection of shapes inside a containers
================================================================================
foo.biz.baz -> bar.baz.biz: Label

--------------------------------------------------------------------------------

(source_file
  (connection
    (container_key) (dot) (container_key) (dot) (shape_key)
    (arrow)
    (container_key) (dot) (container_key) (dot) (shape_key)
    (label)
  )
)

================================================================================
Connection of shapes inside a block of container
================================================================================
foo.baz: {
  foo -> biz: Label
}

--------------------------------------------------------------------------------

(source_file
  (container
    (container_key) (dot)
    (container
      (container_key)
      (block
        (connection
          (shape_key)
          (arrow)
          (shape_key)
          (label)
        )
      )
    )
  )
)