---
title: Printing verbosity
---

Default `verbose = 0`:

```{r, test}
1:5  # a visible value
x = 1 + 1  # invisible
for (i in 1:10) i^2  # for loop returns invisible NULL
y = x^2  # invisible
```

`verbose = 1` always prints the last value:

```{r, test, verbose = 1}
```

`verbose = 2` prints all invisible values (except for `NULL`):

```{r, test, verbose = 2}
```