# Introduction

This example shows how to use the Dart API from sherpa-onnx to add punctuations to text.

| File | Description|
|------|------------|
|[./bin/punctuations.dart](./bin/punctuations.dart)| Use a [CT Transformer model](https://modelscope.cn/models/iic/punc_ct-transformer_zh-cn-common-vocab272727-pytorch/summary) to add punctuations to text. See [./run-ct-transformer.sh](./run-ct-transformer.sh)|