[Rd] Demo and 00Index problems

[Ronald Barry]

Greetings,
  I am sure I'm missing the obvious, but my 00Index file in the demo
subdirectory is not recognized by R CMD check (the demo runs fine, but
I get a WARNING from R CMD check about a lack of demo/00Index file.
When I invoke demo()  in R I see the name but not description of the
demo).  Is there documentation (other than 'Writing R extensions') on
putting together the demo subdirectory?  Thanks.

Ron Barry