# start

`import { start } from "destack:telemetry";`

Start one span with the default tracer.

```ds title="start"
export function start(name: &'a readonly string, options?: SpanOptions | undefined): Span
```

[language/library/src/telemetry/trace.ds:186:188](https://github.com/destack-sh/destack/blob/main/language/library/src/telemetry/trace.ds#L186-L188)