{
    "id": "FM_Aircraft",
    "name": "FM_Aircraft",
    "features": {
        "Aircraft": {
            "name": "Aircraft",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Cloth": {
            "name": "Cloth",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Engine": {
            "name": "Engine",
            "optional": true,
            "type": "XOR",
            "note": ""
        },
        "High": {
            "name": "High",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Jet": {
            "name": "Jet",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Low": {
            "name": "Low",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Materials": {
            "name": "Materials",
            "optional": false,
            "type": "OR",
            "note": ""
        },
        "Metal": {
            "name": "Metal",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Piston": {
            "name": "Piston",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Plastic": {
            "name": "Plastic",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Shoulder": {
            "name": "Shoulder",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        },
        "Wing": {
            "name": "Wing",
            "optional": false,
            "type": "OR",
            "note": ""
        },
        "Wood": {
            "name": "Wood",
            "optional": true,
            "type": "FEATURE",
            "note": ""
        }
    },
    "tree": {
        "id": "Aircraft",
        "children": [
            {
                "id": "Engine",
                "children": [
                    {
                        "id": "Jet"
                    },
                    {
                        "id": "Piston"
                    }
                ]
            },
            {
                "id": "Materials",
                "children": [
                    {
                        "id": "Cloth"
                    },
                    {
                        "id": "Metal"
                    },
                    {
                        "id": "Plastic"
                    },
                    {
                        "id": "Wood"
                    }
                ]
            },
            {
                "id": "Wing",
                "children": [
                    {
                        "id": "High"
                    },
                    {
                        "id": "Low"
                    },
                    {
                        "id": "Shoulder"
                    }
                ]
            }
        ]
    },
    "constraints": {}
}