clarifications

git-svn-id: https://svn.r-project.org/R/trunk@87806 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: ripley

src/library/base/man/grep.Rd

@@ -62,21 +62,21 @@ gregexec(pattern, text, ignore.case = FALSE, perl = FALSE,
   \item{x, text}{a character vector where matches are sought, or an
     object which can be coerced by \code{as.character} to a character
     vector.  \link{Long vectors} are supported.}
-  \item{ignore.case}{if \code{FALSE}, the pattern matching is \emph{case
+  \item{ignore.case}{logical. if \code{FALSE}, the pattern matching is \emph{case
       sensitive} and if \code{TRUE}, case is ignored during matching.}
   \item{perl}{logical.  Should Perl-compatible regexps be used?}
-  \item{value}{if \code{FALSE}, a vector containing the (\code{integer})
+  \item{value}{logical. If \code{FALSE}, a vector containing the (\code{integer})
     indices of the matches determined by \code{grep} is returned, and if
     \code{TRUE}, a vector containing the matching elements themselves is
     returned.}
-  \item{fixed}{logical.  If \code{TRUE}, \code{pattern} is a string to be
+  \item{fixed}{logical. If \code{TRUE}, \code{pattern} is a string to be
     matched as is.  Overrides all conflicting arguments.}
   \item{useBytes}{logical.  If \code{TRUE} the matching is done
     byte-by-byte rather than character-by-character.  See
     \sQuote{Details}.}
-  \item{invert}{logical.  If \code{TRUE} return indices or values for
+  \item{invert}{logical. If \code{TRUE} return indices or values for
     elements that do \emph{not} match.}
-  \item{replacement}{a replacement for matched pattern in \code{sub} and
+  \item{replacement}{a replacement for the matched pattern in \code{sub} and
     \code{gsub}.  Coerced to character if possible.  For
     \code{fixed = FALSE} this can include backreferences \code{"\\1"} to
     \code{"\\9"} to parenthesized subexpressions of \code{pattern}.  For