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    Type Alias Interlaced

    Interlaced: PlainDescriptor<
        {
            new_region_ids: FixedSizeArray<
                2,
                { begin: number; core: number; mask: FixedSizeBinary<10> },
            >;
            old_region_id: { begin: number; core: number; mask: FixedSizeBinary<10> };
        },
    >

    A Region has been converted into two overlapping Regions each of lesser regularity.