R help - Jun 2006 - problem with "code/documentation mismatch"

I have a package with a division method for special objects of class 
"RoidataList", i.e. the function is named `/.RoidataList'.
documentation for this is in the file "Divide.RoidataList".


R CMD CHECK complains with:

=================cut=====================* checking for code/documentation
mismatches ... WARNING
Functions/methods with usage in documentation object 
'Divide.RoidataList' but not in code:
   /

* checking Rd \usage sections ... WARNING
Objects in \usage without \alias in documentation object 
'Divide.RoidataList':
   /
=================cut=====================
the `usage' section in the Rd file reads

=================cut=====================\usage{
    x/y
}
=================cut=====================
which, of course is the desired way to use the function.
what am I doing wrong, i.e. how should I modify the Rd file?
maybe obvious, but not to me.

joerg van den hoff

Just an idea:  how about using the \usage for the formal syntax, and
\synopsis for the "user syntax", i.e. x/y ?

Not sure it will work, but it might be worth a try... :-)

-- 
Bj?rn-Helge Mevik