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\name{multi.menu}
\alias{multi.menu}
\title{Choose multiple options from a menu}
\usage{
multi.menu(choices, title, header, allow.zero = TRUE)
}
\arguments{
\item{choices}{Character vector of labels for choices}
\item{title}{Title printed before menu}
\item{header}{Character vector of length 2 giving column titles}
\item{allow.zero}{Permit 0 as an acceptable response}
}
\description{
\code{multi.menu} presents the user with a menu of choices
labelled from 1 to the number of choices. The user may choose
one or more options by entering a comma separated list. A range
of values may also be specified using the ":" operator. Mixed
expressions such as "1,3:5, 6" are permitted.
If \code{allow.zero} is set to TRUE, one can select `0' to exit
without choosing an item.
}
\value{
Numeric vector giving the numbers of the options selected, or
0 if no selection is made.
}
\author{Martyn Plummer}
\seealso{
\code{\link{menu}}.
}
\keyword{utilities}
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