MAIN carries no index because there is exactly one of it; every other kind is abbreviation + index. index may still be a raw path segment (a string), because that is what the registry hands a row's undoLabel.
index
undoLabel
MAIN carries no index because there is exactly one of it; every other kind is abbreviation + index.
indexmay still be a raw path segment (a string), because that is what the registry hands a row'sundoLabel.