for(int x = 0; x < entries.length; x++)
{
if(entries[x] != null)
{
BTreeSet.BTreeNode child = entries[x].child;
PropertyNode xNode = (PropertyNode)entries[x].element;
if(xNode != null)
{
int xStart = xNode.getStart();
int xEnd = xNode.getEnd();
if(xStart < end)
{
if(xStart >= start)
{
if(child != null)