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9. Flex Predicates 145<br />
the conflict resolution scoring system (crss/3) when deciding which is the<br />
best rule to fire.<br />
Examples<br />
new_rule( prescribe_lomotil,<br />
( prove(complains(patient,diarrhoea)),<br />
disprove(suffers(patient,liver_complaints)),<br />
disprove(pregnant(patient)) ),<br />
prescribe(patient,lomotil),<br />
file(medical7),<br />
0 ) .<br />
new_rule( fill_B_from_A<br />
(<br />
comparison(,@(contents,jugA),0) ),<br />
( new_value( @(contents,jugA),<br />
@(contents,jugA) + @(contents,jugB)),<br />
new_value(@(contents,jugB),@(capacity,jugB))<br />
),<br />
text([jugB,was,not,full,and,jugA,was,not,empty]),<br />
@(contents,jugB)+@(capacity,jugB) ) .<br />
new_slot( +Attribute,+Frame,+Value )<br />
Create (or replace) a current Value for a particular Attribute of a Frame<br />
(or instance of a frame). The current Value overrides any default value, and<br />
is used whenever the Attribute of the Frame is accessed.<br />
Before the update is allowed any constraints (see new_constraint/8) on<br />
the Value are first checked. Following the update, any associated demons<br />
(see new_demon/7) are activated.<br />
Examples<br />
new_slot( habitat, moby_dick, [atlantic,arctic] ) .<br />
new_slot( predator, moby_dick, jonah ) .<br />
new_slot( food, moby_dick, fish ) .<br />
new_synonym( +Name,+Term )<br />
Add (or replace if the Name already exists) a new synonym for the Term.<br />
Whenever a KSL file is reconsulted, all occurrences of Name will be<br />
replaced by Term.<br />
Examples<br />
new_synonym( boiling_point, 100 ) .<br />
<strong>flex</strong> toolkit
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