  A symmetric quandle is a quandle with a good involution. For a knot in
\$R^3\$, a knotted surface in \$R^4\$ or an \$n\$-manifold knot in \$R^{n+2}\$,
the knot symmetric quandle is defined. We introduce the notion of a symmetric
quandle presentation, and show how to get a presentation of a knot symmetric
quandle from a diagram.
