* <font color=green>an element which matches some set of one-token-long input strings</font>.
*
* <p>
- * This class is a topology over itself (yes, that's sort of Frege'd
- * up) so that Atoms can be intersected and unioned with each other
- * to result in other Atom<Token>'s (rather than raw Topology<Token>'s, which
- * are not Elements). If you want the latter, use the
- * getTokenTopology() method.
+ * This class is a topology over itself (yes, that's sort of <a
+ * href=http://en.wikipedia.org/wiki/Frege>Frege'd</a> up) so that
+ * Atoms can be intersected and unioned with each other to result in
+ * other Atom<Token>'s (rather than raw Topology<Token>'s, which are
+ * not Elements). If you want the latter, use the getTokenTopology()
+ * method.
* </p>
*/
public abstract class Atom<Token> extends Element implements Topology<Atom<Token>> {