Test rmarkdown::render()

test.rmd

---
title: "Test"
output: html_notebook
---

Make some vectors

```{r}
abc <- c("a", "b", "c")
nums <- 1:3
```

Vectors of strings print twice when using `rmarkdown::render()` on this document (but as expected in RStudio)

```{r}
abc
```

This prints the same way by either method.

```{r}
print(abc)
```

Numbers print as expected.

```{r}
nums
```