RstudioでRパッケージを作ってみる 2 ～マニュアル作成～ ref: http://qiita.com/Dixhom/items/3cf24c5e80392a99e72e

file0.txt

\name{hello}
\alias{HelloWorld}
%- Also NEED an '\alias' for EACH other topic documented here.
\title{
%%  ~~function to do ... ~~
hello
}
\description{
%%  ~~ A concise (1-5 lines) description of what the function does. ~~
It prints "Hello world!" ten times. That's all.
}
\usage{
hello()
}
%- maybe also 'usage' for other objects documented here.
\arguments{
  \item{No argument}{
%%     ~~Describe \code{x} here~~
No argument for this function.
}
}
\details{
%%  ~~ If necessary, more details than the description above ~~
Again, it prints "Hello world!" ten times. That's all.
}
\value{
%%  ~Describe the value returned
%%  If it is a LIST, use
%%  \item{comp1 }{Description of 'comp1'}
%%  \item{comp2 }{Description of 'comp2'}
%% ...
}
\references{
%% ~put references to the literature/web site here ~
[1] www.dummyurl.com
}
\author{
%%  ~~who you are~~
John Doe
}
\note{
%%  ~~further notes~~
This is the note.
}

%% ~Make other sections like Warning with \section{Warning }{....} ~

\seealso{
%% ~~objects to See Also as \code{\link{help}}, ~~~
}
\examples{
# prints "Hello world" ten times
hello()
% Add one or more standard keywords, see file 'KEYWORDS' in the
% R documentation directory.
\keyword{ keyword1 }
\keyword{ keyword2 }
\keyword{ keyword3 }
}