# Application Development

- developer<!--developer-->
    <!--Del-->
    - [Delete a tag.](onlyfortest/media/audio-kit-intro.md)
    - [Verifying Word Batch Replacement](onlyfortest/media/audio-playback-overview.md)
    - [Replace the label.](onlyfortest/media/media-kit-intro.md)
    <!--DelEnd-->
    - [Auto Service Test dev](onlyfortest/media/auto-service-test-dev.md)
    - [Sample Test dev](onlyfortest/media/sample-test-dev.md)
    - [API Info TestCase one-dev](onlyfortest/media/api-info-TC-one-dev.md)
    - [API Info TestCase two-dev](onlyfortest/media/api-info-TC-two-dev.md)
- reference<!--reference-->
    <!--Del-->
    - [api-info--This requirement can be implemented only in the reference folder.](onlyfortest/reference/test.md)
    - [@ohos.multimedia.media (media service) (system interface)](onlyfortest/reference/test-sys.md)
    <!--DelEnd-->
    - error-code<!--reference-error-code-->
        - [error-code](onlyfortest/reference/apis-media-kit/errorcode-media.md)    
    - [Auto Service Test](onlyfortest/reference/auto-service-test.md)
    - [Sample Test](onlyfortest/reference/sample-test.md)
    - api-info<!--reference-api-info-->
        - [API Info TestCase one](onlyfortest/reference/api-info-test-kit/api-info-TC-one.md)
        - [API Info TestCase two](onlyfortest/reference/api-info-test-kit/api-info-TC-two.md)