Document a few more differences

R/pmap.R

@@ -24,8 +24,8 @@
 #'     you can only refer to arguments by position.
 #' @inheritParams map
 #' @returns
-#' The output length is determined by the length of the input.
-#' The output names are determined by the names of the first element.
+#' The output length is determined by the maximum length of all elements of `.l`.
+#' The output names are determined by the names of the first element of `.l`.
 #' The output type is determined by the suffix:
 #'
 #' * No suffix: a list; `.f()` can return anything.
@@ -35,9 +35,9 @@
 #'   vector of length 1.
 #'
 #' * `_vec()` return an atomic or S3 vector, the same type that `.f` returns.
-#'   `.f` can return pretty much any type of vector, as long as its length 1.
+#'   `.f` can return pretty much any type of vector, as long as it is length 1.
 #'
-#' * `walk()` returns the input `.x` (invisibly). This makes it easy to
+#' * `pwalk()` returns the input `.l` (invisibly). This makes it easy to
 #'    use in a pipe. The return value of `.f()` is ignored.
 #'
 #' Any errors thrown by `.f` will be wrapped in an error with class