# E0211

A `main` parameter whose type is not a built-in capability or `Args`. Spans the parameter's type.

**Machine-applicable fix:** none.

## Example

This program fails with `E0211`.

```oska
fn main(count: Int) {}
```

## Fixed

The same program, fixed.

```oska
fn main(io: Stdout) {}
```

Listed in the [checker notes](/checker.md#e0211). `oskac explain E0211` prints this entry offline.