# DSL Syntax Guide: DiagnosticService

To define a diagnostic service in the OTX/ODX abstraction layer, use the `DiagnosticService` keyword.

## Syntax
```dsl
DiagnosticService <ServiceName> {
    request: <HexCode>
    response: <HexCode>
    timeout: <Integer> ms
}
```

## Rules
* The service name must be UpperCamelCase.
* Timeouts are strictly defined in milliseconds.
* Use the `extends` keyword to inherit properties from a base service.