Csurf current surface select (bottom line)

This set of radio buttons to the right of the
SURFACE button picks the hemisphere surface to
load when SURFACE is clicked.  The standard types
of surfaces are:

  folded -- e.g., smoothwm
  inflated -- inflated without stretching
  viewcuts -- 3D patch before flattening
  flattened -- patch after flattening

The radio buttons select default surfaces of each
type.  Other surfaces can be loaded by selecting
them from the "surface:" dropdown before clicking
SURFACE.

Patches (3D and flattened) can be loaded by
selecting them from the "patch:" dropdown before
clicking SURFACE.

The list of possible surfaces includes:

  orig -- made from "filled" 3D data set
  smoothwm -- refined orig (near GM/WM border)
  white -- estimate of exact GM/WM border
  pial -- non-intersecting est. pial surface
  inflated -- inflate smoothwm w/o stretching
  sphere -- inflate to 10 cm radius sphere
  sphere.reg -- register/morph sphere to avg

The hemisphere prefix (rh. or lh.) is omitted
from the surface filenames in the dropdown.
