The "Any" attribute feature allows you to insert any attribute of specified namespaces into an element, a complex type or an attribute group declaration. It is only available in a model targeted with XSD.
In a schema, Any Attribute is declared with the <anyAttribute> tag.
For example:
Warning!
Any Attribute only is displayed in a schema (see the Preview tab of a model property sheet).
The Any Attribute feature is available via a check box in the bottom-left corner of an Attributes tab.
To display an Any Attribute property sheet, select the Any Attribute check box and then click the Properties tool.