tab, select vertice and hit ‘y’…
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please…
Hello
split means, euh…split!!!
Just kiding. Well it separates? (splits) the selected vertices from the mesh.
P key (separate) is useful too, but create another new mesh
Bye
In edit mode select some vertices hit y-key —> OK. Now move the still selected vertices and you will see what split means.
got it. 