15 November 2011

IDN tables, particularly "top level tables", should be submitted in a machine-readable format suitable for ICANN or another party to read them programmatically. A format such as the model format described in Section 5 of RFC 4290 would be ideal. The format used by RFC 3743 is an acceptable alternative. For variant generation algorithms that are more complex (such as those with contextual rules) and cannot be expressed using these table formats, it should be specified in a manner that could be re-implemented programmatically by ICANN. Ideally, for any complex table formats, a reference code implementation should be provided in conjunction with a description of the generation rules.

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