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variable: $normdsampuniqvoxflag -- toggle uniq
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default: 0

"NormSamp, Clust Controls" parameter.  To adjust,
access pop-up by L-click on "label:" (bold).

This flag only affects the operation of:

  write_label_timecourses_stats
  ("label:" line "T" and "S" buttons)

It has no effect on:

  paint_surface
  ("val3d:" line "PAINT" button)

If ticked, timecourses (and/or stats) are only
written out once for each uniq voxel sampled by
the vertices in the input label.

The vertex that 'owns' the unique voxel is the
first one to hit it.
