# Classes with attributes. OK.
edge {color: blue; arrowhead: odot} node.green {color: green; shape: rect} [node.1] {color: pink} -> [node.2] {class: green}
# Classes with attributes. OK.
edge {color: blue; arrowhead: odot} node.green {color: green; shape: rect} [node.1] {color: pink} -> [node.2] {class: green}