thatstar 

The thatstar element tells the AIML interpreter that it should
substitute the contents of a wildcard from a pattern-side that element. The
thatstar element has an optional integer index attribute that indicates
which wildcard to use; the minimum acceptable value for the index is "1"
(the first wildcard). An AIML interpreter should raise an error if the index
attribute of a star specifies a wildcard that does not exist in the that
element's pattern content. Not specifying the index is the same as
specifying an index of "1".

Element Information

Model

Attributes

QName Type Fixed Default Use Inheritable Annotation
index xs:integer optional

Source 

<xs:element name="thatstar" type="IndexedElement">
  <xs:annotation>
    <xs:documentation>The thatstar element tells the AIML interpreter that it should substitute the contents of a wildcard from a pattern-side that element. The thatstar element has an optional integer index attribute that indicates which wildcard to use; the minimum acceptable value for the index is "1" (the first wildcard). An AIML interpreter should raise an error if the index attribute of a star specifies a wildcard that does not exist in the that element's pattern content. Not specifying the index is the same as specifying an index of "1".</xs:documentation>
  </xs:annotation>
</xs:element>

Sample