--- merge1.Rd	2016-06-08 13:34:35.000000000 -0500
+++ merge2.Rd	2016-06-08 14:03:34.000000000 -0500
@@ -42,7 +42,7 @@
     columns?}
   \item{suffixes}{a character vector of length 2 specifying the suffixes
     to be used for making unique the names of columns in the result
-    which not used for merging (appearing in \code{by} etc).}
+    which are not used for merging (appearing in \code{by} etc).}
   \item{incomparables}{values which cannot be matched.  See
     \code{\link{match}}.  This is intended to be used for merging on one
     column, so these are incomparable values of that column.}