---
title: "Standard Library: Control Flow and Macros"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Standard Library: Control Flow and Macros}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

Source and arl chunks are in `lang-control.Rmd.orig`.