diff --git a/.Rbuildignore b/.Rbuildignore
index 52ebb35..029154d 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -2,3 +2,6 @@
 ^\.Rproj\.user$
 ^CONDUCT\.md$
 ^.github$
+^funcgeo\.Rcheck$
+^funcgeo.*\.tar\.gz$
+^funcgeo.*\.tgz$
diff --git a/.gitignore b/.gitignore
index 5b6a065..f551cd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,6 @@
 .Rhistory
 .RData
 .Ruserdata
+funcgeo.Rcheck/
+funcgeo*.tar.gz
+funcgeo*.tgz
diff --git a/DESCRIPTION b/DESCRIPTION
index 4cfddf2..5adc0bd 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: funcgeo
 Type: Package
 Title: Functional Geometry in R
-Version: 0.2.1.9000
+Version: 0.2.1.9001
 Authors@R: person("Matthew", "Henderson", email = "matthew.james.henderson@gmail.com",
                   role = c("aut", "cre"))
 Description: Peter Henderson's Functional Geometry in R.
@@ -9,6 +9,6 @@ License: MIT + file LICENSE
 Imports:
     grid
 Encoding: UTF-8
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 URL: https://github.com/mhenderson/funcgeo
 BugReports: https://github.com/mhenderson/funcgeo/issues
diff --git a/R/rot.R b/R/rot.R
index 6101a5d..f57f1db 100644
--- a/R/rot.R
+++ b/R/rot.R
@@ -1,8 +1,12 @@
-#' Rotate a grob.
+#' Rotate a picture
 #'
-#' @param g A grob
+#' `rot` returns a new picture, made by rotating the input picture. If no angle
+#' is specified then the new picture will be rotated 90 degrees. A different
+#' angle can be specified with the `angle` argument.
+#'
+#' @param g A `grid::grob` picture
 #' @param angle An angle
-#' @return Rotated grob
+#' @return A rotated `grid::grob` picture
 #' @export
 rot <- function(g, angle = 90) {
   grid::editGrob(g, vp = grid::viewport(
diff --git a/man/rot.Rd b/man/rot.Rd
index ecd57a5..ce6d603 100644
--- a/man/rot.Rd
+++ b/man/rot.Rd
@@ -2,18 +2,20 @@
 % Please edit documentation in R/rot.R
 \name{rot}
 \alias{rot}
-\title{Rotate a grob.}
+\title{Rotate a picture}
 \usage{
 rot(g, angle = 90)
 }
 \arguments{
-\item{g}{A grob}
+\item{g}{A `grid::grob` picture}
 
 \item{angle}{An angle}
 }
 \value{
-Rotated grob
+A rotated `grid::grob` picture
 }
 \description{
-Rotate a grob.
+`rot` returns a new picture, made by rotating the input picture. If no angle
+is specified then the new picture will be rotated 90 degrees. A different
+angle can be specified with the `angle` argument.
 }