Making a Legend/Key in GraphViz

Question

I’d like to include a legend or key in my GraphViz diagram. I’m having trouble figuring out what code to use, though. I also want to put it in a corner, but the only coord I

Answer 1

digraph {
  rankdir=LR
  node [shape=plaintext]
  subgraph cluster_01 { 
    label = "Legend";
    key [label=<

      
item 1
      
item 2
      
item 3
      
item 4
      
>]
    key2 [label=<>]
    key:i1:e -> key2:i1:w [style=dashed]
    key:i2:e -> key2:i2:w [color=gray]
    key:i3:e -> key2:i3:w [color=peachpuff3]
    key:i4:e -> key2:i4:w [color=turquoise4, style=dotted]
  }
  ...

I used dot.