Vol/Surf Outline
The Volume Surface Outline tab (Vol/Surf Outline for short) in the Overlay Toolbox allows one to set parameters for viewing brain surface outlines on volume slices in the Volume or All (Whole Brain) Viewing Tabs (inactive in all other Views).
This is useful for comparing Freesurfer, or otherwise reconstructed, surfaces with volume slices, as a check of the quality of the surface. It is also useful for viewing Connectivity data (dense connectivity and BOLD dense data series files) on both the cortical ribbon and in subcortical voxels.

- On checkbox toggles on/off a brain surface outlined on a volume slice view.

- Color Source sets the coloring of the outline as provided by either (A) the displayed overlays from another Tab, or (B) from a list of default solid colors.

- Thickness sets the width of the lines as a percentage of the height of the tab in which the volume is drawn.

- File selects which surface will be used for the outline display.

A
B