[R] Where to put example files?

[michael watson (IAH-C)]

I'm writing an R package which includes some text file parsing
functions, and I want to include with my package some example files to
be used with those functions.  My question is which directory should I
put these example files in for the user to access?  I have tried demo,
example, doc and sample but none seem to work or "fit".

Thanks in advance
Mick