The Paths Dialog. By using the Path tool in the Toolbox, you can precisely adapt the outline of the selection. You can find further information regarding paths in the Paths dialog section.
command converts a selection into a path. The image does not seem to change, but you can see the new path in theYou can access this command from the image menu bar through
→ .You can also access it from the Selection Editor or from the Paths Dialog which offers you a lot of Advanced Options.