function start(code) {
    if (
      code === codes.quotationMark ||
      code === codes.apostrophe ||
      code === codes.leftParenthesis
    ) {
      effects.enter(type)
      effects.enter(markerType)
      effects.consume(code)
      effects.exit(markerType)
      marker = code === codes.leftParenthesis ? codes.rightParenthesis : code
      return begin
    }

    return nok(code)
  }
Start of title.

```markdown
> | "a"
    ^
```

@type {State}