lookup
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... delimit the parameter from the value. The version numbers of any
lookup tables used by the algorithm SHOULD be present as
parameterized modifications.
...
... Use of Lookup Tables ...
...
Some collations use customizable lookup tables, e.g., because the
tables depend on locale, and may be modified after shipping the
software. Collations that use more than one customizable lookup ...
... lookup tables, e.g., because the
tables depend on locale, and may be modified after shipping the
software. Collations that use more than one customizable lookup
table in a documented format MUST assign numbers to the tables they
use. This permits an application protocol ...