Returns a `hilo`

central probability interval with probability coverage of
`size`

. By default, the distribution's `quantile()`

will be used to compute
the lower and upper bound for a centered interval

```
# S3 method for class 'distribution'
hilo(x, size = 95, ...)
```

## Arguments

- x
The distribution(s).

- size
The size of the interval (between 0 and 100).

- ...
Additional arguments used by methods.