[Rd] help with Rcmd check

[Whit Armstrong]

I've been working on a package that requires a shared library to be loaded.
I have used the NAMESPACE file to load the library according to: 
http://cran.r-project.org/doc/manuals/R-exts.html#Load%20hooks
<http://cran.r-project.org/doc/manuals/R-exts.html#Load%20hooks> 

my shared library is "excelpoi.so" hence I have added "useDynLib(excelpoi)"
to my NAMESPACE file.

Prior to this change, my package was passing Rcmd check with no errors or
warnings.  After this change, I get 5 warnings:

whita$grep 'WARN' /home/whita/dvl/excelpoi.Rcheck/00check.log
* checking S3 generic/method consistency ... WARNING
* checking replacement functions ... WARNING
* checking foreign function calls ... WARNING
* checking for missing documentation entries ... WARNING
* checking for code/documentation mismatches ... WARNING
whita$

Can anyone suggest a fix to those warnings.  My package only has one
function in it which has nothing to do with replacement and has no S3
methods.  Here it is (from file excelpoi/R/excelpoi.R):

write.xls <- function(x,filename,sheetName,writeColNms=T,writeRowNms=T) {
  if(missing(sheetName) && typeof(x)=="list") sheetName <- NULL
 
.Call("R2xls",x,filename,sheetName,writeColNms,writeRowNms,PACKAGE="excelpoi
")
}

Thanks in advance,
Whit

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