diff --git a/R/comparators.R b/R/comparators.R
index 0232713..c362592 100644
--- a/R/comparators.R
+++ b/R/comparators.R
@@ -24,9 +24,9 @@
 #' (\code{TRUE}/\code{FALSE} or \code{1}/\code{0}) result. The result should 
 #' not contain missing values. 
 #' 
-#' The `jaro_winkler`, `lcs` and `jaccard` functions use the corresponding 
+#' The \code{jaro_winkler}, \code{lcs} and \code{jaccard} functions use the corresponding 
 #' methods from \code{\link{stringdist}} except that they are transformed from
-#' a distnce to a similarity score.
+#' a distance to a similarity score.
 #' 
 #' @return 
 #' The functions return a comparison function (see details).
diff --git a/R/data.R b/R/data.R
index 0e4924b..cf70524 100644
--- a/R/data.R
+++ b/R/data.R
@@ -4,13 +4,13 @@
 #' Contains fictional records of 7 persons.
 #'
 #' \itemize{
-#'   \item id the id of the person; this contains no errors and can be used to 
+#'   \item \code{id} the id of the person; this contains no errors and can be used to 
 #'     validate the linkage. 
-#'   \item lastname the lastname of the person; contains errors.
-#'   \item firstname the firstname of the persons; contains errors.
-#'   \item address the address; contains errors.
-#'   \item sex the sex; contains errors and missing values.
-#'   \item postcode the postcode; contains no errors. 
+#'   \item \code{lastname} the last name of the person; contains errors.
+#'   \item \code{firstname} the first name of the persons; contains errors.
+#'   \item \code{address} the address; contains errors.
+#'   \item \code{sex} the sex; contains errors and missing values.
+#'   \item \code{postcode} the postcode; contains no errors. 
 #' }
 #'
 #' @docType data
diff --git a/R/filter_pairs_for_deduplication.R b/R/filter_pairs_for_deduplication.R
index d4e5a7b..3a8ac65 100644
--- a/R/filter_pairs_for_deduplication.R
+++ b/R/filter_pairs_for_deduplication.R
@@ -4,7 +4,7 @@
 #' 
 #' In case of deduplication one tries to link a data set to itself. Therefore, 
 #' comparisons only have to be made for records for which the index of the
-#' records from the first data set is larger than the index fron the record from
+#' records from the first data set is larger than the index from the record from
 #' the second data set. 
 #' 
 #' @param pairs a \code{pairs} object, such as generated by 
diff --git a/R/pair_blocking.R b/R/pair_blocking.R
index 51aaba1..09b5b25 100644
--- a/R/pair_blocking.R
+++ b/R/pair_blocking.R
@@ -22,7 +22,7 @@
 #' @return 
 #' When \code{large} is \code{FALSE}, a \code{data.frame} with two columns, 
 #' \code{x} and \code{y}, is returned. Columns \code{x} and \code{y} are 
-#' rownumbers from \code{data.frame}s \code{x} and \code{y} respectively. 
+#' row numbers from \code{data.frame}s \code{x} and \code{y} respectively. 
 #' When \code{large} is \code{TRUE}, an object of type \code{ldat} is returned. 
 #'
 #' @examples
diff --git a/R/predict_problink_em.R b/R/predict_problink_em.R
index 79dfb11..2f581e4 100644
--- a/R/predict_problink_em.R
+++ b/R/predict_problink_em.R
@@ -1,12 +1,12 @@
 
 #' Calculate weights and probabilities for pairs
 #' 
-#' @param object an object of type `problink_em` as produced by 
+#' @param object an object of type \code{problink_em} as produced by 
 #'   \code{\link{problink_em}}.
 #' @param pairs a object with pairs for which to calculate weights.
-#' @param newdata an alternative name for the `pairs` argument. Specify 
-#'   `newdata` or `pairs`. 
-#' @param type a character vector of length one speicifying what to calculate. 
+#' @param newdata an alternative name for the \code{pairs} argument. Specify 
+#'   \code{newdata} or \code{pairs}. 
+#' @param type a character vector of length one specifying what to calculate. 
 #'   See results for more information.
 #' @param binary convert comparison vectors to binary vectors using the 
 #'   comparison function in comparators. 
@@ -15,12 +15,12 @@
 #' @param ... unused.
 #'   
 #' @return 
-#' In case of `type == "weights"` returns a vector (\code{\link{lvec}} or
-#' regular R-vector depending on the type of `pairs`). with the linkage weights. 
-#' In case of `type == "mpost"` returns a vector with the posterior m-probabilities
-#' (probability that a pair is a match). In case of `type == "probs"` returns a
+#' In case of \code{type == "weights"} returns a vector (\code{\link{lvec}} or
+#' regular R-vector depending on the type of \code{pairs}). with the linkage weights. 
+#' In case of \code{type == "mpost"} returns a vector with the posterior m-probabilities
+#' (probability that a pair is a match). In case of \code{type == "probs"} returns a
 #' data.frame or \code{\link{ldat}} with the m- and u-probabilities and posterior
-#' m- and u probabilities. In case `type == "all"` returns a `data.frame` or 
+#' m- and u probabilities. In case \code{type == "all"} returns a \code{data.frame} or 
 #' \code{\link{ldat}} with both probabilities and weights. 
 #' 
 #' @import ldat
diff --git a/R/problink_em.R b/R/problink_em.R
index feefa91..1de65d5 100644
--- a/R/problink_em.R
+++ b/R/problink_em.R
@@ -9,7 +9,7 @@
 #'   should be lists with numeric values. The names of the elements in the list
 #'   should correspond to the names in \code{by_x} in \code{\link{compare_pairs}}. 
 #' @param p0 the initial estimate of the probability that a pair is a match.
-#' @param tol when the change in the m and u-probabilities is smaller than tol
+#' @param tol when the change in the m and u-probabilities is smaller than \code{tol}
 #'   the algorithm is stopped. 
 #'   
 #' @return 
diff --git a/R/score_problink.R b/R/score_problink.R
index bd69e4a..c82f740 100644
--- a/R/score_problink.R
+++ b/R/score_problink.R
@@ -18,7 +18,7 @@
 #' \code{...} argument that causes the calculation of multiple scores (such
 #' are \code{type = "all"}). In that case the text given by \code{var} is 
 #' prepended to the names of the variables returned by 
-#' \code{\link{predict.problink_em}} (with a seperator '\code{_}'). 
+#' \code{\link{predict.problink_em}} (with a separator '\code{_}'). 
 #' 
 #' When \code{add = FALSE} the scores are returned as is. 
 #' 
diff --git a/cran-comments.md b/cran-comments.md
index 823f97c..b91ca33 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -4,6 +4,7 @@ This is a new package.
 
 ## Test environments
 * local ubuntu 18.04 install, R 3.4.4
+* local ubuntu 18.04 install, R 3.4.4 + valgrind
 * R-devel on windows using the R-builder
 * R with valgrind and sanitizers on rhub
 * R-devel on rhub
@@ -11,7 +12,9 @@ This is a new package.
 
 ## R CMD check results
 
-0 errors | 0 warnings | 0 notes
+0 errors | 0 warnings | 1 notes
+
+1 note because it is a new package
 
 
 ## Reverse dependencies
diff --git a/man/comparators.Rd b/man/comparators.Rd
index a5c380f..b9320d4 100644
--- a/man/comparators.Rd
+++ b/man/comparators.Rd
@@ -45,9 +45,9 @@ a previous comparison. The function should translate that result to a binary
 (\code{TRUE}/\code{FALSE} or \code{1}/\code{0}) result. The result should 
 not contain missing values. 
 
-The `jaro_winkler`, `lcs` and `jaccard` functions use the corresponding 
+The \code{jaro_winkler}, \code{lcs} and \code{jaccard} functions use the corresponding 
 methods from \code{\link{stringdist}} except that they are transformed from
-a distnce to a similarity score.
+a distance to a similarity score.
 }
 \examples{
 cmp <- identical()
diff --git a/man/filter_pairs_for_deduplication.Rd b/man/filter_pairs_for_deduplication.Rd
index a64d39b..d518e9c 100644
--- a/man/filter_pairs_for_deduplication.Rd
+++ b/man/filter_pairs_for_deduplication.Rd
@@ -13,6 +13,6 @@ filter_pairs_for_deduplication(pairs)
 \description{
 In case of deduplication one tries to link a data set to itself. Therefore, 
 comparisons only have to be made for records for which the index of the
-records from the first data set is larger than the index fron the record from
+records from the first data set is larger than the index from the record from
 the second data set.
 }
diff --git a/man/linkexample.Rd b/man/linkexample.Rd
index c16b1aa..808997c 100644
--- a/man/linkexample.Rd
+++ b/man/linkexample.Rd
@@ -11,13 +11,13 @@ Contains fictional records of 7 persons.
 }
 \details{
 \itemize{
-  \item id the id of the person; this contains no errors and can be used to 
+  \item \code{id} the id of the person; this contains no errors and can be used to 
     validate the linkage. 
-  \item lastname the lastname of the person; contains errors.
-  \item firstname the firstname of the persons; contains errors.
-  \item address the address; contains errors.
-  \item sex the sex; contains errors and missing values.
-  \item postcode the postcode; contains no errors. 
+  \item \code{lastname} the last name of the person; contains errors.
+  \item \code{firstname} the first name of the persons; contains errors.
+  \item \code{address} the address; contains errors.
+  \item \code{sex} the sex; contains errors and missing values.
+  \item \code{postcode} the postcode; contains no errors. 
 }
 }
 \keyword{datasets}
diff --git a/man/pair_blocking.Rd b/man/pair_blocking.Rd
index 0bf64d1..e49602c 100644
--- a/man/pair_blocking.Rd
+++ b/man/pair_blocking.Rd
@@ -27,7 +27,7 @@ number of pairs that are kept in memory.}
 \value{
 When \code{large} is \code{FALSE}, a \code{data.frame} with two columns, 
 \code{x} and \code{y}, is returned. Columns \code{x} and \code{y} are 
-rownumbers from \code{data.frame}s \code{x} and \code{y} respectively. 
+row numbers from \code{data.frame}s \code{x} and \code{y} respectively. 
 When \code{large} is \code{TRUE}, an object of type \code{ldat} is returned.
 }
 \description{
diff --git a/man/predict.problink_em.Rd b/man/predict.problink_em.Rd
index 1bcbdc3..3652a8c 100644
--- a/man/predict.problink_em.Rd
+++ b/man/predict.problink_em.Rd
@@ -9,15 +9,15 @@
   ...)
 }
 \arguments{
-\item{object}{an object of type `problink_em` as produced by 
+\item{object}{an object of type \code{problink_em} as produced by 
 \code{\link{problink_em}}.}
 
 \item{pairs}{a object with pairs for which to calculate weights.}
 
-\item{newdata}{an alternative name for the `pairs` argument. Specify 
-`newdata` or `pairs`.}
+\item{newdata}{an alternative name for the \code{pairs} argument. Specify 
+\code{newdata} or \code{pairs}.}
 
-\item{type}{a character vector of length one speicifying what to calculate. 
+\item{type}{a character vector of length one specifying what to calculate. 
 See results for more information.}
 
 \item{binary}{convert comparison vectors to binary vectors using the 
@@ -29,12 +29,12 @@ When missing \code{attr(pairs, 'comparators')} is used.}
 \item{...}{unused.}
 }
 \value{
-In case of `type == "weights"` returns a vector (\code{\link{lvec}} or
-regular R-vector depending on the type of `pairs`). with the linkage weights. 
-In case of `type == "mpost"` returns a vector with the posterior m-probabilities
-(probability that a pair is a match). In case of `type == "probs"` returns a
+In case of \code{type == "weights"} returns a vector (\code{\link{lvec}} or
+regular R-vector depending on the type of \code{pairs}). with the linkage weights. 
+In case of \code{type == "mpost"} returns a vector with the posterior m-probabilities
+(probability that a pair is a match). In case of \code{type == "probs"} returns a
 data.frame or \code{\link{ldat}} with the m- and u-probabilities and posterior
-m- and u probabilities. In case `type == "all"` returns a `data.frame` or 
+m- and u probabilities. In case \code{type == "all"} returns a \code{data.frame} or 
 \code{\link{ldat}} with both probabilities and weights.
 }
 \description{
diff --git a/man/problink_em.Rd b/man/problink_em.Rd
index 6656b4e..aa2041f 100644
--- a/man/problink_em.Rd
+++ b/man/problink_em.Rd
@@ -18,7 +18,7 @@ should correspond to the names in \code{by_x} in \code{\link{compare_pairs}}.}
 
 \item{p0}{the initial estimate of the probability that a pair is a match.}
 
-\item{tol}{when the change in the m and u-probabilities is smaller than tol
+\item{tol}{when the change in the m and u-probabilities is smaller than \code{tol}
 the algorithm is stopped.}
 }
 \value{
diff --git a/man/score_problink.Rd b/man/score_problink.Rd
index 0e9d3d5..241bfb1 100644
--- a/man/score_problink.Rd
+++ b/man/score_problink.Rd
@@ -29,7 +29,7 @@ arguments are passed on to \code{\link{predict.problink_em}} using the
 \code{...} argument that causes the calculation of multiple scores (such
 are \code{type = "all"}). In that case the text given by \code{var} is 
 prepended to the names of the variables returned by 
-\code{\link{predict.problink_em}} (with a seperator '\code{_}'). 
+\code{\link{predict.problink_em}} (with a separator '\code{_}'). 
 
 When \code{add = FALSE} the scores are returned as is.
 }
diff --git a/vignettes/deduplication.Rmd b/vignettes/deduplication.Rmd
index 18f0513..9fe0d91 100644
--- a/vignettes/deduplication.Rmd
+++ b/vignettes/deduplication.Rmd
@@ -4,7 +4,7 @@ author: "Jan van der Laan"
 date: "`r Sys.Date()`"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{Vignette Title}
+  %\VignetteIndexEntry{Deduplication using reclin}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---
diff --git a/vignettes/introduction_to_reclin.Rmd b/vignettes/introduction_to_reclin.Rmd
index 0cb981b..d9cc006 100644
--- a/vignettes/introduction_to_reclin.Rmd
+++ b/vignettes/introduction_to_reclin.Rmd
@@ -4,7 +4,7 @@ author: "Jan van der Laan"
 date: "`r Sys.Date()`"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{Vignette Title}
+  %\VignetteIndexEntry{Introduction to reclin}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---