On 08/09/2008, at 8:52 PM, Will Robertson wrote:

> On 08/09/2008, at 8:43 PM, Morten Høgholm wrote:
>
>> There is \cs_use:c (in l3basics I believe).
>
> Ah, this is undocumented.
> I'll add something somewhere.

Looking closer, I see:

\def_new:Npn \use:c #1{\cs:w #1\cs_end:}
\def_new:Npn \cs_use:c #1 { \cs:w#1\cs_end: }

These two functions are used in approximately equal number throughout  
expl3 and the xpackages.

Can I deprecate one of these (i.e., do a search'n'replace across the  
board) to fix this inconsistency? I guess if I had to choose one,  
\cs_use:c would be my pick.

Will