classes: { q: { shape: diamond } start: { shape: oval label: Début near: top-center } end: { shape: oval label: Fin near: bottom-center } comment: { style: { stroke-dash: 3 } } y: { source-arrowhead.label: yes style.stroke: green source-arrowhead.style.font-color: green } n: { source-arrowhead.label: no style.stroke: red source-arrowhead.style.font-color: red } } direction: down start.class: start end.class: end