113-externalization.Rmd

# Code Externalization

Write R code in external R scripts, and use `read_chunk()` to read them into the current document.

```{r cache=FALSE}
knitr::read_chunk('113-foo.R')
```

The following two chunks are from the external R script `113-foo.R`:

```{r test-a}
```
```{r test-b}
```