no longer open PolyML -- to avoid surprises within the global name space;
recovered some important PolyML bindings (NB: print and makestring cannot be rebound without loosing infinite overloading);
package GraphBrowser;
import java.util.Vector;
class Directory {
TreeNode node;
String name;
Vector collapsed;
public Directory(TreeNode nd,String n,Vector col) {
collapsed=col;
name=n;
node=nd;
}
public TreeNode getNode() { return node; }
public String getName() { return name; }
public Vector getCollapsed() { return collapsed; }
}