How to use GetParent and GetParent2

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

LOCAL loXml0
LOCAL loXml
LOCAL loBookNode
LOCAL loTitleNode
LOCAL loBookNode2
LOCAL lcStr1
LOCAL lcStr2
LOCAL lcStr3


loXml0 = CreateObject('Chilkat.Xml')

*  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:
loXml = loXml0.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.

loBookNode = loXml.GetChild(0)

*  Set titleNode equal to the title child of bookNode:

loTitleNode = loBookNode.GetChildWithTag("title")

*  Call GetParent to return a new object pointing to the parent node:

loBookNode2 = loTitleNode.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:
loTitleNode.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:

lcStr1 = loBookNode.GetXml()
lcStr2 = loBookNode2.GetXml()
lcStr3 = loTitleNode.GetXml()

? lcStr1
? lcStr2
? lcStr3