---
title: "Test: Exercise Option is a Symbol"
output: learnr::tutorial
runtime: shiny_prerendered
---

```{r setup, include=FALSE}
library(learnr)
do_exercise <- TRUE
knitr::opts_chunk$set(echo = FALSE)
```


## Topic

### Exercise T

*Here's a simple exercise with an empty code chunk provided for entering the answer.*

Write the R code required to add two plus two:

```{r symbol, exercise = T}
"symbol"
```

### Exercise Variable

```{r variable, exercise = do_exercise}
"variable (also a symbol)"
```
