#### make ROI, or just set fill type ####
-------------------------------------------
funct (left-click):
  fill_nearest_vertices 2 <mm>
-------------------------------------------
set (middle-click):
  set fillneartype 2
-------------------------------------------

Fill Closest Vertices up to Radius (mm)

The "R" button (lower right) selects vertices
nearest in Euclidean distance to the most
recently selected vertex on the currently
displayed surface until the requested radius (in
mm) is reached.

On an inflated surface, this approximates
geodesic distances along the folded surface.

On a folded surface, it will select cortical
surface vertices that intersect a spherical
volume centered at the selected vertex.  In this
case, the selected vertices may not form a single
connected patch.

The total original area is reported in log.

To undo this, use UNDO, INIT, or ALL.

Use a middle click on "N" to just set the value 
of $fillneartype (e.g., for write_searchlights) 
to 2 (radius in mm).

