---
title: "Missing Exercise Checker"
output: learnr::tutorial
runtime: shiny_prerendered
---

```{r setup, include=FALSE}
library(learnr)
```

## Topic 1

<!-- https://github.com/rstudio/learnr/issues/448 -->

```{r two-plus-two, exercise=TRUE}

```

```{r two-plus-two-check}
# presence of a check chunk implies exercise.checker is required
```

