ELEMENT:  <reference>
The <reference> tag can be used to include a reference to an external type library. This is useful for importing constants from the external type library. A reference can be created based on its ProgID or GUID. The object and guid attributes are mutually exclusive. The reference is valid within the job where it was created.

Syntax: <reference [object="progID" | guid="typelibGUID"] [version="version_info"] />

Attribute: object
The object attribute can be used to create a reference based on its ProgID.

Attribute: guid
The guid attribute can be used to create a reference based on its type library GUID.

Attribute: version
The optional version attribute can be used to indicate which version of the type library to use. It must be in the form <major version>[.<minor version>]. If it is not specified, and cannot be derived from the Registry key for the specified ProgID or GUID, the default value "1.0" is used.

The following sample code creates a reference to ADODB.Recordset and displays the value of the constant named adUseClient. Note the use of the + rather than the & for the concatenation, since the & is a special character in XML

<?XML version="1.0" ?>
<!-- Filename: demo.wsf-->
<package>
  <job>
    <reference object="ADODB.Recordset"/>
    <script language="VBScript">
      WScript.Echo "adUseClient = " + CStr(adUseClient)
    </script>
  </job>
</package>
Output:
adUseClient = 3
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