  We introduce the idea of a weakly entangled linear order, and show that it is
consistent for a Suslin line to be weakly entangled. We generalize the notion
of entangled linear orders to $\omega_1$-trees, and prove that an
$\omega_1$-tree is entangled iff it is free. We force the existence of a Suslin
tree which is $n$-entangled, but all of whose derived trees of dimension $n+1$
are special, for any positive $n < \omega$.
