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entry variable: $rawlabel -- ROI/label file (BRIK)
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default: */<scandir>/rh-MY_AREA+orig.BRIK

The "roin:" entry shows the name of the current
native-resolution 3D ROI/label (usu. not loaded
at startup).  This might have been generated, for
example, by converting a surface label to a
native-resolution 3D label in tksurfer (using the
"D" button on the "label:" line).

The current session directory can be abbreviated
as an asterisk (*). Absolute name OK, too.
Relative name appended to current scandir.

The ROI/label file is a native resolution
(dimensions, etc, inherited from rawdata), usu.
hemisphere-specific, short (2-byte) AFNI BRIK
with a voxel value of 1 to indicate where the
label is and 0 elsewhere.

The native ROI/label is typically generated from
a tksurfer surface label, and used here for
viewing/verification prior to export to another
data analysis program.
