\newbibfield[help!] : Very quick question.

[David Wooten <dw@trichotomic.net>]

Greetings all,

In working with the bib module, I've been trying to understand the 
addition of a field. There is a "\newbibfield" command, but it is not 
entirely clear where to declare it. E.g., I want to have a field called 
"yearnote". If I place this in the list of commands in the t-bib.tex 
file, and call for it with "\insertyearnote" in the 
\setuppublicationlayout, it works perfectly. But declaring 
\newbibfield[yearnote] yields me an "undefined control sequence". Is 
there a special place to declare the latter? — I've tried in my current 
file, before and after \starttext, in the .bbl file, before and after 
\setuppublicationlist… no luck!

Regards,
David