digraph G {

L1 [shape=plaintext] ;
L2 [shape=plaintext] ;
L3 [shape=plaintext] ;
L4 [shape=plaintext] ;

"L4" -> "L3" -> "L2" -> "L1" [style=invis] ;

"exif"  [shape=box] ;
"ifd"   [shape=box] ;
"image" [shape=box] ;
"tags"  [shape=box] ;
"types" [shape=box] ;
"value" [shape=box] ;
"error" [shape=box] ;
"exif" -> "ifd" ;
"exif" -> "image" ;
"exif" -> "tags" ;
"exif" -> "types" ;
"exif" -> "value" ;
"exif" -> "error" ;
"ifd" -> "error" ;  
"ifd" -> "types" ;
"image" -> "types" ;
"tags" -> "error" ;
"tags" -> "types" ;
"tags" -> "value" ;
"value" -> "types" ;

{ rank=same; L1 error types }
{ rank=same; L2 image value ifd }

}