> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# addPomAsSubsection

> Append another PomBuilder's sections as subsections of a target section.

[ref-findsection]: /docs/server-sdks/reference/typescript/agents/pom-builder/find-section

Append every top-level section of another `PomBuilder` as a subsection of a
target section in this builder. Useful for composing prompts assembled
separately into a single document.

> **Warning**
>
> Throws `Error("No section with title '<target>' found.")` when `target` is a
> string and no section with that title exists. For deeper lookups, resolve the
> section yourself via [`findSection()`][ref-findsection] and pass the
> `PomSection` directly.

## **Parameters**

**`target`** `string | PomSection` — required

The target section to append into. Pass a title string for top-level
sections, or a `PomSection` instance (from `findSection()`) for nested
sections.

---

**`pomToAdd`** `PomBuilder` — required

The builder whose sections should be appended.

---

## **Returns**

`this` -- returns the builder for fluent chaining.

## **Example**

```typescript {11}
import { PomBuilder } from '@signalwire/sdk';

const subPom = new PomBuilder();
subPom.addSection('Policy A', { body: 'Always greet by name.' });
subPom.addSection('Policy B', { body: 'Escalate billing issues.' });

const main = new PomBuilder();
main.addSection('Introduction', { body: 'You are a helpful agent.' });
main.addSection('Policies');

main.addPomAsSubsection('Policies', subPom);
console.log(main.renderMarkdown());
```

> Append another PomBuilder's sections as subsections of a target section.