address CRAN comments

.Rbuildignore

@@ -11,3 +11,4 @@
 ^docs$
 ^revdep$
 ^appveyor\.yml$
+^CRAN-RELEASE$

CRAN-RELEASE

@@ -0,0 +1,2 @@
+This package was submitted to CRAN on 2020-01-13.
+Once it is accepted, delete this file and tag the release (commit 3e3ad287f3).

LICENSE

@@ -1,2 +1,2 @@
-YEAR: 2019
+YEAR: 2020
 COPYRIGHT HOLDER: Claus O. Wilke

R/richtext-grob.R

@@ -37,6 +37,7 @@
 #' @param use_markdown Should the `text` input be treated as markdown? Default
 #'   is yes.
 #' @param debug Should debugging info be drawn? Default is no.
+#' @return A grid [`grob`] that represents the formatted text.
 #' @seealso [`textbox_grob()`]
 #' @examples
 #' library(grid)

R/textbox-grob.R

@@ -48,6 +48,7 @@
 #' @param box_gp Graphical parameters for the enclosing box around each text label.
 #' @param vp Viewport.
 #' @param use_markdown Should the `text` input be treated as markdown?
+#' @return A grid [`grob`] that represents the formatted text.
 #' @seealso [`richtext_grob()`]
 #' @examples
 #' library(grid)

cran-comments.md

@@ -1,5 +1,8 @@
-In the revised submission, package names, software names,
-and API names have been enclosed in single quotes in 
+Fixes done in response to requests by CRAN maintainers:
+
+- All exported functions now have their return values documented via \value.
+
+- Package names, software names, and API names have been enclosed in single quotes in 
 Title and Description.
 
 ## Test environments