To limit results to a specific relevancy score you can use: $SEL SS,($rk 0,99)
Where SS= search step number and 99 is the minimum relevancy score you are looking for.
For example
SS 1 = (my search)/TI/AB
SS 2 = ($SEL 1, ($RK 0,90))
Explanation : based on the results from the search statement 1, keep only results with 90% relevancy score and above.
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