Add some more base R callouts

defaults-short-and-sweet.qmd

@@ -80,7 +80,8 @@ sample.int <- function (n, size = n, replace = FALSE, prob = NULL, useHash = NUL
 }
 ```
 
-This pattern is made more elegant with the infix `%||%` operator which you can use by importing it from rlang or copying and pasting it in to your `utils.R`:
+This pattern is made more elegant with the infix `%||%` operator which is built in to R 4.4.
+If you need it in an older version of R you can import it from rlang or copy and paste it in to your `utils.R`:
 
 ```{r}
 `%||%` <- function(x, y) if (is.null(x)) y else x
@@ -170,7 +171,7 @@ Because it has a relatively complex explanation, it's nice to be able to documen
 If the above techniques don't work for your case there are two other alternatives that we don't generally recommend but can be useful in limited situations.
 
 ::: {.callout-note collapse="true"}
-#### Sentinel value {#sec-args-default-sentinel}
+#### Sentinel value {#defaults-short-and-sweet-defaults-short-and-sweet-sec-args-default-sentinel}
 
 Sometimes you'd like to use the `NULL` approach defined above, but `NULL` already has a specific meaning that you want to preserve.
 For example, this comes up in ggplot2 scales functions which allow you to set the `name` of the scale which is displayed on the axis or legend.

dots-after-required.qmd

@@ -63,6 +63,12 @@ mean3(x, , TRUE)
 mean3(x, n = TRUE, t = 0.1)
 ```
 
+::: {.callout-note collapse="true"}
+## Base R
+
+In base R you can use `base::chkDots()`, but it uses a slightly simpler technique which means it's not suitable for usage in S3 methods.
+:::
+
 ## See also
 
 -   @sec-dots-data: if `…` is a required argument because it's used to combine an arbitrary number of objects in a data structure.