d: val => elevationLayer.setOpacity(val),
                },
                modelOpacity: {
                    slider: [1, [0, 1, 0.1]],
                    cmd: val => view.canvas.style.opacity = val,
                },
            },

            'Model Data': {
                modelTicks: {
                    monitor: [model, 'ticks']
                },
                patches: {
                    monitor: [model.patches, 'length']
                    // cmd: () => model.patches.length,
            