\name{getEMObservables}
\alias{getEMObservables}
\title{Fetches observable variables from a gmModel.}
\description{
  Returns a list of variables which have the \code{role} of
  \code{"Observable"}.  Normally this implies that the argument is an
  evidence or link model.
}
\usage{
getEMObservables(em)
}
\arguments{
  \item{em}{A \code{gmModel} object containing an evidence or link model.}
}
\value{
  A list of \code{varDescription} objects.
}
\references{
  \url{http://research.ets.org/~ralmond/StatShop/dataFormats.html}
}
\author{Russell Almond}
\seealso{
  \code{\link[XML]{XMLNode}}, \code{\link{parseParameterSet}}
}
\keyword{attribute}% at least one, from doc/KEYWORDS