Updating Internet Information Services (IIS) permissions


I have a question concerning the following "Updating Internet Information Services (IIS) permissions" that has been bothering me for quite sometime now.  Can someone please explain to me what the following statement means from the document entitled "Resource Processing Guide Pg21"

Need an understanding on the following statement from the document

NOTE: To process any other IIS properties, you need to use the Vmover utility in manual mode. First, prepare the configuration file, Vmover.ini. The properties you need should be included in the [IIS Identifiers] section of the file as follows:

[IIS Identifiers]
The number at the end of the string specifies the property type:

0—security descriptor
1—user name
2—domain name