  In \cite{rump_goml}, Rump defined and characterized noncommutative universal
groups $G(X)$ for generalized orthomodular lattices $X$.
  We give an explicit description of $G(X)$ in terms of \emph{paraunitary}
matrix groups, whenever $X$ is the orthomodular lattice of subspaces of a
finite-dimensional $k$-vector space $V$ that is equipped with an anisotropic,
symmetric $k$-bilinear form.
