Is Username Expansion possible in GNUS?

[Danny Siu <dsiu@mv.us.adobe.com>]

There is a very nice feature of Pine which can be included in GNUS message
mode .  When composing a message in Pine, just type in the username, for
example, "dsiu", and Pine will expend it to full name and uid@FQDN, like
"Danny Siu <dsiu@adobe.com>".  

It is particularly useful when you are not certain about the email address of
someone in your school or company when you email him.

Is this possible in GNUS?

-- 
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m( oo )m                                                         ,,  ,,
/=-=-=-=-=-=-=-=-=-=-=-==-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\
|  Danny Dick-Fung Siu                http://www-leland.stanford.edu/~dsiu |
|  Reference System Group             http://www.csua.berkeley.edu/~dsiu   |
|  Adobe Systems Incorporated       E-Mail:<dsiu@alumni.eecs.berkeley.edu> |
|       "What do you expect from a         <dsiu@leland.stanford.edu>      |
|          Cal. Berkeley grad.?"           <dsiu@adobe.com>                |
\=-=-=-=-=-=-=-=-=-=-=-==-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/