What are all the NHibernate HiLo generator params?

Question

I've seen some docs by Fabio Maulo that shows the following params:

<id name="Id" type="Int64" column="cat_id">
    <generator class="hilo">
            <param name="table">hi_value</param>
            <param name="column">next_value</param>
            <param name="max_lo">100</param>
    </generator>
</id>

However, on this question the poster uses a <param name="schema">... I'd like to be able to specify schema for the HiLo generator.

Is there definitive documentation for all generator parameters? I've tried googling it without success.