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  \item{fileEncoding}{character string: if non-empty declares the
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  \item{fileEncoding}{character string: if non-empty declares the
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    encoding used on a file when given as a character string (not on an
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    encoding used on a file when given as a character string (not on an
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    existing connection) so the character data can
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    existing connection) so the character data can
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    be re-encoded.  See the \sQuote{Encoding} section of the help for
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    be re-encoded.  See the \sQuote{Encoding} section of the help for
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    \code{\link{file}}, the \sQuote{R Data Import/Export} manual and
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    \code{\link{file}}, \manual{R-data}{Variations on read.table}, and
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    \sQuote{Note}.
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    \sQuote{Note}.
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  }
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  }
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  \item{encoding}{encoding to be assumed for input strings.  It is
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  \item{encoding}{encoding to be assumed for input strings.  It is
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    used to mark character strings as known to be in
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    used to mark character strings as known to be in
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  \code{"UTF-8"}.
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  \code{"UTF-8"}.
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}
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}
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\section{Memory usage}{
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\section{Memory usage}{
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  These functions can use a surprising amount of memory when reading
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  These functions can use a surprising amount of memory when reading
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  large files.  There is extensive discussion in the \sQuote{R Data
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  large files.  There is extensive discussion in the manual \manual{R-data}{},
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  Import/Export} manual, supplementing the notes here.
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  supplementing the notes here.
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  Less memory will be used if \code{colClasses} is specified as one of
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  Less memory will be used if \code{colClasses} is specified as one of
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  the six \link{atomic} vector classes.  This can be particularly so when
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  the six \link{atomic} vector classes.  This can be particularly so when
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  reading a column that takes many distinct numeric values, as storing
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  reading a column that takes many distinct numeric values, as storing
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  each distinct value as a character string can take up to 14 times as
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  each distinct value as a character string can take up to 14 times as
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  into the current locale.  Note that on Windows or other systems not running
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  into the current locale.  Note that on Windows or other systems not running
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  in a UTF-8 locale, this may not be possible.
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  in a UTF-8 locale, this may not be possible.
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}
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}
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\seealso{
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\seealso{
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  The \sQuote{R Data Import/Export} manual.
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  The manual \manual{R-data}{}.
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  \code{\link{scan}}, \code{\link{type.convert}},
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  \code{\link{scan}}, \code{\link{type.convert}},
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  \code{\link{read.fwf}} for reading \emph{f}ixed \emph{w}idth
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  \code{\link{read.fwf}} for reading \emph{f}ixed \emph{w}idth
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  \emph{f}ormatted input;
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  \emph{f}ormatted input;
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  \code{\link{write.table}};
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  \code{\link{write.table}};