',
                        type: 'select',
                        options: [
                            {value: undefined},
                            {text: 'clamp body', value: {clamp: MatrixClampOption.body}},
                            {text: 'clamp corner', value: {clamp: MatrixClampOption.corner}},
                            {text: 'clamp all', value: {clamp: MatrixClampOption.all}},
                            {text: 'clamp none', value: {clamp: MatrixClampOption.none}},
                        