Between the three bibliography-setting commands of Context mkiv, what is the hierarchy?
\usebtxdefinitions[aps] \definebtxrendering[default][chicago][specification=chicago,sorttype=authoryear,numbering=no] \setupbtxlist[chicago]
If the only thing I need is chicago, and use \usebtxdefinitions[chicago], I get a blank bibliography with
<article> instead of the citation, although chicago is mentioned among the basic styles. So I use it as written and it works OK, but I just want to understand the logic.