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\alias{setInternet2}
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\alias{setInternet2}
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\title{
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\title{
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Set or disable the use of Internet Explorer for Internet access.
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Set or disable the use of Internet Explorer for Internet access.
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}
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}
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\description{
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\description{
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With the \option{--internet2} startup option, or by calling this function, R
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  With the \option{--internet2} startup option, or \emph{via}
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  environment variable \env{R_WIN_INTERNET2} or by calling this
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will make use of the \file{internet2.dll} library for Internet
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  function, R will make use of the \file{internet2.dll} library for
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access, which makes use of Internet Explorer functions.  This allows specification
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  Internet access, which makes use of Internet Explorer functions.  This
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  allows specification of proxies, etc., in the \dQuote{Internet
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of proxies, etc., in the \dQuote{Internet Options} applet in \dQuote{Control Panel}.
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    Options} applet in \dQuote{Control Panel}.
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}
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}
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\usage{
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\usage{
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setInternet2(use = TRUE)
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setInternet2(use = TRUE)
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}
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}
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\arguments{
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\arguments{
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}
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}
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\value{
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\value{
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The previous setting is returned, invisibly if \code{use} is not \code{NA}.
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The previous setting is returned, invisibly if \code{use} is not \code{NA}.
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}
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}
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\details{
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\details{
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R does not load either \file{internet.dll} or \file{internet2.dll} until needed,
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  R does not load either \file{internet.dll} or \file{internet2.dll}
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so it is certainly safe to call this function before making any calls that access
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  until needed, so it is certainly safe to call this function before
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  making any calls that access the Internet
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the Internet (e.g. \code{\link{download.file}}).  If one of the DLLs has already
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  (e.g. \code{\link{download.file}}).  If one of the DLLs has already
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been loaded, this function will switch to the other one without unloading the first
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  been loaded, this function will switch to the other one without
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one, so there is a potential resource leak.
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  unloading the first one, so there is a potential resource leak.
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}
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}
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\author{
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\author{
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Duncan Murdoch
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Duncan Murdoch
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}
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}
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\seealso{
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\seealso{