{
  "FILE_FORMAT": 1,
  "FILE_HEADER_LINES": 4,
  "X1_FACTOR": 0.001,
  "Y1_FACTOR": 1e-06,
  "YEAR_FABRICATION": null,
  "SURFACE_SHAPE": "plane",
  "FUNCTION": null,
  "LENGTH": 1.36,
  "WIDTH": 0.16,
  "THICK": 0.05,
  "LENGTH_OPTICAL": 1.2,
  "SUBSTRATE": "silicon",
  "COATING": null,
  "FACILITY": "ESRF",
  "INSTRUMENT": null,
  "POLISHING": null,
  "ENVIRONMENT": null,
  "SCAN_DATE": null,
  "PLOT_TITLE_X1": "x(mm)",
  "PLOT_TITLE_Y1": "Slope (urad)",
  "CALC_HEIGHT_RMS": null,
  "CALC_HEIGHT_RMS_FACTOR": null,
  "CALC_SLOPE_RMS": null,
  "CALC_SLOPE_RMS_FACTOR": null,
  "USER_EXAMPLE": "This is an example of user keyword"
}