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flex Expert System Toolkit - LPIS

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Appendix B - Formal Definition of KSL 193<br />

[is,a,new] |<br />

[is,another] .<br />

new_slot_value --><br />

[whose],<br />

name( attribute ),<br />

is,<br />

expression .<br />

is --><br />

[is] |<br />

[are] .<br />

directive --><br />

variant( simple ),<br />

assign,<br />

expression .<br />

assign --><br />

[becomes] |<br />

[become]|<br />

[:=] .<br />

directive --><br />

[add],<br />

expression,<br />

[to],<br />

variant( simple ) .<br />

directive --><br />

[subtract],<br />

expression,<br />

[from],<br />

variant( simple ) .<br />

directive --><br />

[include],<br />

expression,<br />

[in],<br />

variant( simple ) .<br />

directive --><br />

[remove],<br />

expression,<br />

[from],<br />

variant( simple ) .<br />

directive --><br />

assertion,<br />

optional( [that] ),<br />

optional( [not] ),<br />

<strong>flex</strong> toolkit

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