-------------------------------------------
var,funct (left-click): read patch
  set patch <infile>
  read_binary_patch
-------------------------------------------

The "R" button on the "patch:" entry line reads
binary patch from file whose name is current
value of $patch (entry at left).

It is assumed that the patch file comes from the
same base surface and hemisphere as that on the
tksurfer command line.

A patch can be read over any surface with the
same topology (e.g., orig, smoothwm, inflated,
white, pial, sphere).
