beginner's questions

[Michael Na Li]

I've used LaTeX for several years but am new to ConTeXt.  Here are a couple
questions I had:

1.  With m-bib module, how can I achieve \nocite{} (no citation but have the
    reference listed in the end) as in LaTeX?  

2.  Is there a command similar to \section*{} effect (no numbering of the
    section)?

Michael