How to use GetParent and GetParent2

How to use GetParent and GetParent2. This is a snippet of the document used in this example:

Download Chilkat .NET for 2.0 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Chilkat.Xml xml0 = new Chilkat.Xml();
Chilkat.Xml xml = null;

//  The Chilkat XML component is freeware.

//  Load an XML document.  Typically you might call LoadXml
//  to load an XML file.  This example loads an XML file from
//  a URL:
xml = xml0.HttpGet("http://www.chilkatsoft.com/testData/bookstore.xml");

//  The xml object points to the root node of the XML document.

//  Set bookNode equal to the 1st child of the root.
Chilkat.Xml bookNode = null;
bookNode = xml.GetChild(0);

//  Set titleNode equal to the title child of bookNode:
Chilkat.Xml titleNode = null;
titleNode = bookNode.GetChildWithTag("title");

//  Call GetParent to return a new object pointing to the parent node:
Chilkat.Xml bookNode2 = null;
bookNode2 = titleNode.GetParent();

//  bookNode2 and bookNode point to the same node.

//  Call GetParent2 (which returns nothing) to modify the internal
//  pointer within the calling object so that it points to the immediate parent:
titleNode.GetParent2();

//  Now titleNode points to the same node as bookNode2 and bookNode.
//  To prove it, generate the XML sub-tree rooted at the calling
//  node and display each:
string str1;
string str2;
string str3;
str1 = bookNode.GetXml();
str2 = bookNode2.GetXml();
str3 = titleNode.GetXml();

textBox1.Text += str1 + "\r\n";
textBox1.Text += str2 + "\r\n";
textBox1.Text += str3 + "\r\n";