\HeaderA{tilde}{Tilde Operator}{tilde}
\aliasA{\textasciitilde{}}{tilde}{\textasciitilde.Rlbrace..Rrbrace.}
\keyword{models}{tilde}
\begin{Description}\relax
Tilde is used to separate the left- and right-hand sides in model formula.
\end{Description}
\begin{Usage}
\begin{verbatim}
y ~ model
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{y, model}] symbolic expressions.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
The left-hand side is optional, and one-sided formulae are used in
some contexts.
\end{Details}
\begin{References}\relax
Chambers, J. M. and Hastie, T. J. (1992)
\emph{Statistical models.}
Chapter 2 of \emph{Statistical Models in S}
eds J. M. Chambers and T. J. Hastie, Wadsworth \& Brooks/Cole.
\end{References}
\begin{SeeAlso}\relax
\code{\LinkA{formula}{formula}}
\end{SeeAlso}

