#' A Structure for Interfaces from R
#'
#' The XR package defines classes and functions that will be extended and used by interfaces from R to
#' other languages.
#' The goals are: a uniform approach; simplicity in programming; users of application packages should be
#' essentially unaware that particular functions and objects are in fact proxies for computations in
#' other languages.
#'
#' The functions in this package will nearly always be used by other packages, providing an interface to a
#' particular language (see packages XRPython and XRJulia for examples). Users will rarely need to call
#' functions in XR and application packages will rarely need to import it directly.
#'
#' For further details, see the reference [1] (Chapter 13 is included in the documentation for this package).
#'
#' @docType package
#' @name XR
#' @references
#' [1] Chambers, John M.
#' \emph{Extending R.} Chapman & Hall, 2016
NULL
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