The XML declaration
<?xml version = "1.0"?> occupies the first line in MetaBase.xml and indicates that the file is formatted as XML. The root element, named <configuration>, contains all other elements.
The IIS_Global key is the highest-level key in the metabase that contains properties. Consider the IIS_Global key to be read-only; do not configure its properties.
The IIS_ROOT key (Location = "/") is the highest-level key in which you can configure properties. Properties that are configured at the IIS_ROOT key affect the general operation of IIS.
The IIsComputer key (Location = "/LM") contains all remaining metabase locations. Table 11.3 lists, in hierarchical order, child locations that can exist within the namespace of the /LM ...