diff --git a/R/column_spec.R b/R/column_spec.R
index a2d89d6..aa2f841 100644
--- a/R/column_spec.R
+++ b/R/column_spec.R
@@ -16,8 +16,16 @@
 #' need to be emphasized.
 #' @param monospace A T/F value to control whether the text of the selected column
 #' need to be monospaced (verbatim)
-#' @param color A character string for column text color.
-#' @param background A character string for column background color.
+#' @param color A character string for column text color. Here please pay
+#' attention to the differences in color codes between HTML and LaTeX.
+#' @param background A character string for column background color. Here please
+#' pay attention to the differences in color codes between HTML and LaTeX.
+#' @param border_left A logical variable indicating whether there should be a
+#' border line on the left of the selected column. In HTML, you can also pass
+#' in a character string for the CSS of the border line
+#' @param border_right A logical variable indicating whether there should be a
+#' border line on the right of the selected column. In HTML, you can also pass
+#' in a character string for the CSS of the border line
 #'
 #' @examples x <- knitr::kable(head(mtcars), "html")
 #' column_spec(x, 1, width = "20em", bold = TRUE, italic = TRUE)
diff --git a/R/kable_as_image.R b/R/kable_as_image.R
index d01d941..ff030cc 100644
--- a/R/kable_as_image.R
+++ b/R/kable_as_image.R
@@ -28,7 +28,7 @@
 #' @param keep_pdf A T/F option to control if the mid-way standalone pdf should
 #' be kept. Default is `FALSE`.
 #'
-#' @examples kable_as_image(kable(mtcars, "latex"), "mtcars")
+#' @examples kable_as_image(kanitr::kble(mtcars, "latex"), "mtcars")
 #' @export
 kable_as_image <- function(kable_input, filename = NULL,
                            file_format = "png",
diff --git a/R/kable_styling.R b/R/kable_styling.R
index 73b9267..bbed083 100644
--- a/R/kable_styling.R
+++ b/R/kable_styling.R
@@ -18,7 +18,7 @@
 #' table to the exact position. It is useful when the `LaTeX` table is contained
 #'  in a `table` environment after you specified captions in `kable()`. It will
 #'  force the table to stay in the position where it was created in the document.
-#' A stronger version: `HOLD_position` requires the `float` package and specifies [H].
+#' A stronger version: `HOLD_position` requires the `float` package and specifies `[H]`.
 #' `scale_down` is useful for super wide table. It will automatically adjust
 #' the table to page width. `repeat_header` in only meaningful in a longtable
 #' environment. It will let the header row repeat on every page in that long
diff --git a/R/row_spec.R b/R/row_spec.R
index 1d5d500..7a17e8c 100644
--- a/R/row_spec.R
+++ b/R/row_spec.R
@@ -13,6 +13,10 @@
 #' need to be emphasized.
 #' @param monospace A T/F value to control whether the text of the selected column
 #' need to be monospaced (verbatim)
+#' @param color A character string for column text color. Here please pay
+#' attention to the differences in color codes between HTML and LaTeX.
+#' @param background A character string for column background color. Here please
+#' pay attention to the differences in color codes between HTML and LaTeX.
 #'
 #' @examples x <- knitr::kable(head(mtcars), "html")
 #' row_spec(x, 1, bold = TRUE, italic = TRUE)