  We consider a symmetric quiver with relations. Its (symmetric)
representations of a fixed symmetric dimension vector are encoded in the
(symmetric) representation varieties. The orbits by a (symmetric) base change
group action are the isomorphism classes of (symmetric) representations. The
symmetric orbits are induced by simply restricting the nonsymmetric orbits.
However, when it comes to orbit closure relations, it is so far an open
question under which assumptions they are induced. In connection with Borel
orbits of 2-nilpotent matrices of classical Lie algebras, we describe an
explicit example of a quiver of finite representation type for which orbit
closure relations are induced in types B and C, but not in type D.
