Coordinates

The coordinate bar shows the crosshair and lets you type one in. The space selector offers World RAS, per-volume voxel and tkr-RAS, and — when a SimNIBS toMNI/ folder sits beside the subject — MNI152 as two separate entries, affine and nonlinear, because they are two different numbers. A surface adds its own vertex index, and fsaverage vertex read-out turns on once a FreeSurfer subjects directory is set in Settings. A space that cannot be used is listed and disabled with the reason on it rather than hidden. Copy yields the triple in the space you selected; Enter converts it back.