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% File src/library/base/man/Reserved.Rd
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% File src/library/base/man/Reserved.Rd
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% Part of the R package, https://www.R-project.org
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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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% Copyright 1995-2017 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{Reserved}
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\name{Reserved}
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\title{Reserved Words in R}
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\alias{Reserved}
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\alias{Reserved}
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\alias{reserved}
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\alias{reserved}
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\alias{...}
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\alias{..1}
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\title{Reserved Words in R}
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\description{
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\description{
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  The reserved words in \R's parser are
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  The reserved words in \R's parser are
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  \code{\link{if}} \code{\link{else}} \code{\link{repeat}} \code{\link{while}}
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  \code{\link{if}} \code{\link{else}} \code{\link{repeat}} \code{\link{while}}
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  \code{\link{function}} \code{\link{for}} \code{in}
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  \code{\link{function}} \code{\link{for}} \code{in}
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  \code{\link{Inf}} \code{\link{NaN}}
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  \code{\link{Inf}} \code{\link{NaN}}
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  \code{\link{NA}} \code{\link{NA_integer_}} \code{\link{NA_real_}}
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  \code{\link{NA}} \code{\link{NA_integer_}} \code{\link{NA_real_}}
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  \code{\link{NA_complex_}} \code{\link{NA_character_}}
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  \code{\link{NA_complex_}} \code{\link{NA_character_}}
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  \code{\dots} and \code{..1}, \code{..2} etc, which are used to refer to
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  \code{\dots} and \code{..1}, \code{..2} etc, which are used to refer to
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  arguments passed down from a calling function.  See the
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  arguments passed down from a calling function, see \code{\link{...}}.
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  \ifelse{html}{\href{/doc/manual/R-intro.html#The-three-dots-argument}{Introduction to R}}{\sQuote{Introduction to R}}
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  manual for usage of these syntactic elements,
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  and \link[methods]{dotsMethods} for their use in formal methods.
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}
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}
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\details{
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\details{
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  Reserved words outside \link[=Quotes]{quotes} are always parsed to be
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  Reserved words outside \link[=Quotes]{quotes} are always parsed to be
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  references to the objects linked to in the \sQuote{Description}, and
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  references to the objects linked to in the \sQuote{Description}, and
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  hence they are not allowed as syntactic names (see
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  hence they are not allowed as syntactic names (see