shiny/man/singleton.Rd

% Generated by roxygen2 (4.0.0): do not edit by hand
\name{singleton}
\alias{singleton}
\title{Include Content Only Once}
\usage{
singleton(x)
}
\arguments{
  \item{x}{A \code{\link{tag}}, text, \code{\link{HTML}},
  or list.}
}
\description{
Use \code{singleton} to wrap contents (tag, text, HTML, or lists) that should
be included in the generated document only once, yet may appear in the
document-generating code more than once. Only the first appearance of the
content (in document order) will be used. Useful for custom components that
have JavaScript files or stylesheets.
}