classes: { GREEN: {style.stroke: "#2b9464"; style.fill: "#2b9464"} RED: {style.stroke: "#d14d28"; style.fill: "#d14d28"} YELLOW: {style.stroke: "#f5df65"; style.fill: "#f5df65"} BLUE: {style.stroke: "#59c8df"; style.fill: "#59c8df"} } grid-rows: 2 grid-columns: 2 grid-gap: 0 1: "link" {class: RED; link: "example.com"} 2: "none" {class: YELLOW} 3: "link, tooltip" {class: BLUE; link: "example.com"; tooltip: tooltip} 4: "none" {class: GREEN}