diff --git a/R/trafficlight.R b/R/trafficlight.R
index 50bd99d576a8fc4dea338a6618de5286f1f2ee4f..43cee0bb7669d9fcaaa744498fb39698894d9f08 100644
--- a/R/trafficlight.R
+++ b/R/trafficlight.R
@@ -8,14 +8,8 @@
 #' @param time vector of time units that will be used for the x axis.
 #' @param sort_5yrmean logical; should the variables be sorted by the first 5yr mean? Default
 #'   is set to TRUE.
-#' @param sort_vec If specific order of variable is desired the sorting index should be
+#' @param sort_vec integer vector; if specific order of variable is desired the sorting index should be
 #'   provided here.
-#' @param main A title.
-#' @param xlab The x axis title. Default is none.
-#' @param ylab The y axis title. Default is none.
-#' @param adj_xlab integer; vertical adjustment of the x axis title.
-#' @param adj_ylab integer; horizontal adjustment of the y axis title.
-#' @param cols A character vector with colors for each quantile or interval.
 #' @param method character; the type of methods to create the color code. Choose
 #'   between using "quantiles" (default) or "intervals".
 #' @param probs a vector of probabilities to calculate the quantiles using the function
@@ -25,10 +19,16 @@
 #' @param quantile_type an integer between 1 and 9 selecting one of the nine quantile
 #'   algorithms detailed below to be used. Default is 7 (see also \code{\link{quantile}}).
 #' @param intervals logical; number of evenly-spaced intervals. Default is 5.
+#' @param cols a character vector with colors for each quantile or interval.
+#' @param main a title.
+#' @param xlab The x axis title. Default is none.
+#' @param ylab The y axis title. Default is none.
+#' @param adj_xlab integer; vertical adjustment of the x axis title.
+#' @param adj_ylab integer; horizontal adjustment of the y axis title.
 #' @param hadj_x double; horizontal adjustment of the x labels.
 #' @param vadj_x double; vertical adjustment of the x labels.
-#' @param hadj_y double; horizontal adjustment of the x labels.
-#' @param vadj_y double; vertical adjustment of the x labels.
+#' @param hadj_y double; horizontal adjustment of the y labels.
+#' @param vadj_y double; vertical adjustment of the y labels.
 #' @param madj_bottom double; adjustment of bottom margin relative to the
 #'   current setting.
 #' @param madj_left double; adjustment of left margin relative to the
@@ -58,20 +58,19 @@
 #' @param respect logical; this argument controls whether a unit column-width is the
 #'   same physical measurement on the device as a unit row-height (default is TRUE).
 #'
-#'
 #' @export
+#' @author Saskia A. Otto
 #' @examples
-#' df <- data.frame(aaaaaaaa = 1:20, bbbbbbbbbb= rnorm(20, 100, 30), c = 1:20 + rnorm(20))
+#' df <- data.frame(variable1 = 1:20, variable2= rnorm(20, 100, 30), variable3 = 1:20 + rnorm(20))
 #' trafficlight(x = df, time = 1981:2000)
 #' df <- matrix(rnorm(100), ncol = 5)
 #' colnames(df) <- letters[1:5]
 #' trafficlight(x = df, time = 1981:2000, legend_pos = "bottom", method = "intervals")
 
 trafficlight <- function(x, time = NULL, sort_5yrmean = TRUE, sort_vec = NULL,
-  main = "", xlab = "", ylab = "", adj_xlab = NULL, adj_ylab = NULL,
+  method = "quantiles", probs = seq(0, 1, 0.2), quantile_type = 7, intervals = 5,
   cols = c("green", "yellowgreen", "yellow", "gold", "red"),
-  method = "quantiles",
-  probs = seq(0, 1, 0.2), quantile_type = 7, intervals = 5,
+  main = "", xlab = "", ylab = "", adj_xlab = NULL, adj_ylab = NULL,
   hadj_x = 0.5, vadj_x = -0.7, hadj_y = -0.7, vadj_y = 0.3,
   madj_bottom = 0, madj_left = 0, madj_top = 0, madj_right = 0,
   legend_pos = "top", legend_intersp_x = 1, legend_intersp_y = 1,
diff --git a/man/trafficlight.Rd b/man/trafficlight.Rd
index 316f733988f862d14068de548effccab1e20400a..7c1be8e46954073f060d85c1c3da954691a49af8 100644
--- a/man/trafficlight.Rd
+++ b/man/trafficlight.Rd
@@ -9,16 +9,16 @@ trafficlight(
   time = NULL,
   sort_5yrmean = TRUE,
   sort_vec = NULL,
+  method = "quantiles",
+  probs = seq(0, 1, 0.2),
+  quantile_type = 7,
+  intervals = 5,
+  cols = c("green", "yellowgreen", "yellow", "gold", "red"),
   main = "",
   xlab = "",
   ylab = "",
   adj_xlab = NULL,
   adj_ylab = NULL,
-  cols = c("green", "yellowgreen", "yellow", "gold", "red"),
-  method = "quantiles",
-  probs = seq(0, 1, 0.2),
-  quantile_type = 7,
-  intervals = 5,
   hadj_x = 0.5,
   vadj_x = -0.7,
   hadj_y = -0.7,
@@ -49,21 +49,9 @@ trafficlight(
 \item{sort_5yrmean}{logical; should the variables be sorted by the first 5yr mean? Default
 is set to TRUE.}
 
-\item{sort_vec}{If specific order of variable is desired the sorting index should be
+\item{sort_vec}{integer vector; if specific order of variable is desired the sorting index should be
 provided here.}
 
-\item{main}{A title.}
-
-\item{xlab}{The x axis title. Default is none.}
-
-\item{ylab}{The y axis title. Default is none.}
-
-\item{adj_xlab}{integer; vertical adjustment of the x axis title.}
-
-\item{adj_ylab}{integer; horizontal adjustment of the y axis title.}
-
-\item{cols}{A character vector with colors for each quantile or interval.}
-
 \item{method}{character; the type of methods to create the color code. Choose
 between using "quantiles" (default) or "intervals".}
 
@@ -77,13 +65,25 @@ algorithms detailed below to be used. Default is 7 (see also \code{\link{quantil
 
 \item{intervals}{logical; number of evenly-spaced intervals. Default is 5.}
 
+\item{cols}{a character vector with colors for each quantile or interval.}
+
+\item{main}{a title.}
+
+\item{xlab}{The x axis title. Default is none.}
+
+\item{ylab}{The y axis title. Default is none.}
+
+\item{adj_xlab}{integer; vertical adjustment of the x axis title.}
+
+\item{adj_ylab}{integer; horizontal adjustment of the y axis title.}
+
 \item{hadj_x}{double; horizontal adjustment of the x labels.}
 
 \item{vadj_x}{double; vertical adjustment of the x labels.}
 
-\item{hadj_y}{double; horizontal adjustment of the x labels.}
+\item{hadj_y}{double; horizontal adjustment of the y labels.}
 
-\item{vadj_y}{double; vertical adjustment of the x labels.}
+\item{vadj_y}{double; vertical adjustment of the y labels.}
 
 \item{madj_bottom}{double; adjustment of bottom margin relative to the
 current setting.}
@@ -134,9 +134,12 @@ This function creates for multiple time series an image plot where the color
 code is based on selected quantiles or evenly spaced intervals.
 }
 \examples{
-df <- data.frame(aaaaaaaa = 1:20, bbbbbbbbbb= rnorm(20, 100, 30), c = 1:20 + rnorm(20))
+df <- data.frame(variable1 = 1:20, variable2= rnorm(20, 100, 30), variable3 = 1:20 + rnorm(20))
 trafficlight(x = df, time = 1981:2000)
 df <- matrix(rnorm(100), ncol = 5)
 colnames(df) <- letters[1:5]
 trafficlight(x = df, time = 1981:2000, legend_pos = "bottom", method = "intervals")
 }
+\author{
+Saskia A. Otto
+}