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% File src/library/base/man/dev.Rd
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2014 R Core Team
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% Distributed under GPL 2 or later
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\name{.Device}
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\alias{.Device}
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\alias{.Devices}
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\title{
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  Lists of Open/Active Graphics Devices
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}
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\description{
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  A pairlist of the names of open graphics devices is stored in
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  \code{.Devices}. The name of the active device (see
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  \code{\link{dev.cur}}) is stored in \code{.Device}.  Both are symbols
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  and so appear in the base namespace.
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}
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\value{
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  \code{.Device} is a length-one character vector.
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  \code{.Devices} is a \link{pairlist} of length-one character vectors.
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  The first entry is always \code{"null device"}, and there are as many
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  entries as the maximal number of graphics devices which have been
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  simultaneously active.  If a device has been removed, its entry will be
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  \code{""} until the device number is reused.
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  Devices may add attributes to the character vector: for example
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  devices which write to a file may record its path in attribute
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  \code{"filepath"}.
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}
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\keyword{device}