# broadcast

[Built-ins](README.md)

Canonical ID: `events.broadcast`. Nederlands: `zendBericht`.

Queues every handler whose message literal exactly matches the argument, in source order. In a running event script it then yields cooperatively. During top-level initialization it records delivery for the later event phase. It is a local program event, not networking, a classroom message, or an operating-system broadcast. No matching handler is harmless.

## Signature

```text
broadcast(message)
```

## Arguments

| Parameter | Type | Requirement |
|---|---|---|
| `message` | Text | Nonempty Text; computed text is allowed here. |

## Return value

`None`.

## Example

```pliro
# language: en
let event = "go"
when started():
    broadcast(event)
when messageReceived("go"):
    say "A"
when messageReceived("go"):
    say "B"
```

Prints `A`, then `B`.

## Notes and common mistakes

Use the function name for your source language. Its [canonical ID](../concepts/canonical-identity.md) is a shared documentation label; you do not type that ID as a call. Giving your own variable or function the same name can hide the built-in. Supply the documented [arguments](../concepts/parameters-and-arguments.md) and value types. Pliro reports mismatches when checking can detect them, or when the call runs.

An **event descriptor** selects the event in a top-level `when` header, outside other blocks (`E3201`–`E3203`). A **reporter** is an ordinary function that returns a value, such as `pointerX`; `broadcast` is an ordinary call too. A **handler** is the block reacting to an event. Key and pointer handlers keep a run ready for future input and need [host support](../guides/hosts.md) (`E4019`). Pointer reporters need the current pointer event (`E4020`). The whole run has a shared [event-work limit](../guides/limits.md) (`E4018`). Ordinary setup must finish before handlers get turns. See [event rules](../guides/events.md) and [pointer positions](../guides/pointer-input.md).

## Related entries

[started](started.md) · [after](after.md) · [messageReceived](messageReceived.md) · [keyPressed](keyPressed.md) · [pointerPressed](pointerPressed.md) · [Programming guides](../guides/events.md) · [Host support](../guides/hosts.md) · [Calls and arguments](../syntax/calls.md)