options.js

{

        type: 'devs.Model',
        inPorts: [],
        outPorts: [],
        size: {
            width: 80,
            height: 80
        },
        attrs: {
            '.': {
                magnet: false
            },
            '.label': {
                text: 'Model',
                'ref-x': .5,
                'ref-y': 10,
                'font-size': 18,
                'text-anchor': 'middle',
                fill: '#000'
            },
            '.body': {
                'ref-width': '100%',
                'ref-height': '100%',
                stroke: '#000'
            }
        },
        ports: {
            groups: {
                'in': {
                    position: {
                        name: 'left'
                    },
                    attrs: {
                        '.port-label': {
                            fill: '#000'
                        },
                        '.port-body': {
                            fill: '#fff',
                            stroke: '#000',
                            r: 10,
                            magnet: true
                        }
                    },
                    label: {
                        position: {
                            name: 'left',
                            args: {
                                y: 10
                            }
                        }
                    }
                },
                'out': {
                    position: {
                        name: 'right'
                    },
                    attrs: {
                        '.port-label': {
                            fill: '#000'
                        },
                        '.port-body': {
                            fill: '#fff',
                            stroke: '#000',
                            r: 10,
                            magnet: true
                        }
                    },
                    label: {
                        position: {
                            name: 'right',
                            args: {
                                y: 10
                            }
                        }
                    }
                }
            }
        }
    }