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% File src/library/base/man/capabilities.Rd
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% File src/library/base/man/capabilities.Rd
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% Part of the R package, http://www.R-project.org
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% Part of the R package, http://www.R-project.org
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% Copyright 1995-2011 R Core Team
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% Copyright 1995-2013 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{capabilities}
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\name{capabilities}
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\alias{capabilities}
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\alias{capabilities}
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\title{Report Capabilities of this Build of R}
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\title{Report Capabilities of this Build of R}
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\arguments{
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\arguments{
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\item{what}{character vector or \code{NULL}, specifying
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\item{what}{character vector or \code{NULL}, specifying
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required components. \code{NULL} implies that all are required.}
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required components. \code{NULL} implies that all are required.}
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}
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}
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#ifdef unix
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#ifdef unix
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\section{Note to Mac OS X users}{
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\section{Note to OS X users}{
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Capabilities \code{"jpeg"}, \code{"png"} and \code{"tiff"} refer to
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Capabilities \code{"jpeg"}, \code{"png"} and \code{"tiff"} refer to
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the X11-based versions of these devices. If
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the X11-based versions of these devices. If
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\code{capabilities("aqua")} is true, then these devices with
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\code{capabilities("aqua")} is true, then these devices with
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\code{type = "quartz"} will be available, and out-of-the-box will be the
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\code{type = "quartz"} will be available, and out-of-the-box will be the
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default type. Thus for example the \code{\link{tiff}} device will be
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default type. Thus for example the \code{\link{tiff}} device will be
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\item{X11}{Are the \code{\link{X11}} graphics device and the
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\item{X11}{Are the \code{\link{X11}} graphics device and the
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X11-based data editor available? This loads the X11 module if not
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X11-based data editor available? This loads the X11 module if not
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already loaded, and checks that the default display can be
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already loaded, and checks that the default display can be
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contacted unless a \code{X11} device has already been used.}
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contacted unless a \code{X11} device has already been used.}
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\item{aqua}{Are the \code{R.app} GUI components and the
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\item{aqua}{Are the \code{R.app} GUI components and the
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\code{\link{quartz}} function operational? Only on some Mac OS X
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\code{\link{quartz}} function operational? Only on some OS X
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builds. Note that this is distinct from
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builds. Note that this is distinct from
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\code{.Platform$GUI == "AQUA"}, which is true when using the Mac
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\code{.Platform$GUI == "AQUA"}, which is true when using the Mac
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\code{R.app} GUI console.}
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\code{R.app} GUI console.}
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#endif
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#endif
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#ifdef windows
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#ifdef windows
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\item{X11}{always \code{FALSE} on Windows.}
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\item{X11}{always \code{FALSE} on Windows.}
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\item{aqua}{\code{FALSE} except on Mac OS X.}
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\item{aqua}{\code{FALSE} except on OS X.}
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#endif
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#endif
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\item{http/ftp}{Are \code{\link{url}} and the internal method for
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\item{http/ftp}{Are \code{\link{url}} and the internal method for
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\code{\link{download.file}} available?}
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\code{\link{download.file}} available?}
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\item{sockets}{Are \code{\link{make.socket}} and related functions
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\item{sockets}{Are \code{\link{make.socket}} and related functions
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available?}
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available?}
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