rendered paste body;3.16
;if there are circular references, then there may be problems...
;
;return 3
;+---+---+ +---+---+ +---+---+
;| / | --+->| / | --+->| / | / |
;+---+---+ +---+---+ +---+---+
;
;return 4
;+---+---+ +---+---+ +---+---+
;| / | --+->| | | --+->| / | / |
;+---+---+ +-+-+---+ +---+---+
; | ^
; | |
; +----------+
;
;returns 7
; +-----------+
; | |
; | V
;+-+-+---+ +---+---+ +---+---+
;| | | --+->| | | --+->| / | / |
;+---+---+ +-+-+---+ +---+---+
; | ^
; | |
; +----------+
;
;never return
;+---+---+ +---+---+ +---+---+
;| / | --+->| / | --+->| | | / |
;+---+---+ +---+---+ +-+-+---+
; ^ |
; | |
; +----------+