-------------------------------------------
var,funct (left-click): read 3D volume into "im2"
  set inim2 <infile>
  read_images2
-------------------------------------------

The "im2:" entry (not visible on fn-F2 smaller
interface), shows the name of a secondary volume
data set.  This data set can be used for surface
operations such as SHRINK (when "ckfill" is
ticked).  This is typically a "filled" volume.

A default startup of tksurfer from csurf (far
right "load2surf filled/T2" not ticked) will
*not* load the "im:" or "im2:" data sets.  Note
that the primary image data ("im:" entry") must
be read before the secondary image can be read.

To read (or re-read) that data set, click the "R"
to the right of the entry.  See R-click help for
"im:" for image format details.
