C:\Users\Pete\Documents\eclipse\punx\src\punx\data\writer_2_1.hdf5 : NeXus data file
  entry:NXentry
    @NX_class = NXentry
    data:NXdata
      @NX_class = NXdata
      @signal = counts
      @axes = two_theta
      @two_theta_indices = 0
      counts --> /entry/instrument/detector/counts
      two_theta --> /entry/instrument/detector/two_theta
    instrument:NXinstrument
      @NX_class = NXinstrument
      detector:NXdetector
        @NX_class = NXdetector
        counts:NX_INT32[31] = [ ... ]
          @units = counts
          @target = /entry/instrument/detector/counts
        two_theta:NX_FLOAT64[31] = [ ... ]
          @units = degrees
          @target = /entry/instrument/detector/two_theta