footnotes author

Hello list,

I have a document with notes from different authors, e.g.

<para>
    some text
    <footnote role='author'>bla bla</footnote>
    another sentence
    <footnote role='translator'>glop glop</footnote>
</para>

The document is to be rendered in html, epub and pdf. How do I attribute the 
notes according to the role, e.g.

[1] [author] bla la
[2] [translator] glop glop

Thanks in advance !

jmt


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            Jean-Marie Thomas

Informatique scientifique et technique