BibTeX, biblatex and biber ⇒ Keywords and XML

[shouldknowbetter]

Dear all,

I previously had some help on this forum for which I am very grateful--so grateful, in fact, that I have come back for more.

I am preparing a bibliography which somebody else will be able to convert into XML (or so I hope).

I have noticed that there is a surprising amount of variety of fields/structure for .bib files; the template I have been using has a field called 'OPTkey'. Funnily enough, I have not been able to find a definite page through Google which explains exactly what this does: is this, as I can only hope, a field which can take a comma-delimited list of keywords for each entry? I would hope to have such a field so that I could add to each entry a number of words related to the source: "good book, quantitative data, calculus of variations" and so on.

Any advice about the nature of this field and/or how I could add a list of comma- or semi-colon-delimited list of keywords to .bib entries would be much, much appreciated.


Thanks again.