#  Subsystems

- [Compilation and Building](subsys-build.md)
  - [Building Guidelines for Mini and Small Systems](subsys-build-mini-lite.md)
  - [Building Guidelines for Standard Systems](subsys-build-standard-large.md)
- [Distributed Remote Startup](subsys-remote-start.md)
- [Graphics](subsys-graphics.md)
  - [Graphics](subsys-graphics-overview.md)
  - [Development Guidelines on Container Components](subsys-graphics-container-guide.md)
  - [Development Guidelines on Layout Container Components](subsys-graphics-layout-guide.md)
  - [Development Guidelines on Common Components](subsys-graphics-common-guide.md)
  - [Development Guidelines on Animators](subsys-graphics-animation-guide.md)
- [Multimedia](subsys-multimedia.md)
  - [Camera](subsys-multimedia-camera.md)
    - [Overview](subsys-multimedia-camera-overview.md)
    - [Development Guidelines on Photographing](subsys-multimedia-camera-photo-guide.md)
    - [Development Guidelines on Video Recording](subsys-multimedia-camera-record-guide.md)
    - [Development Guidelines on Previewing](subsys-multimedia-camera-preview-guide.md)
  - [Audio/Video](subsys-multimedia-video.md)
    - [Overview](subsys-multimedia-video-overview.md)
    - [Development Guidelines on Media Playback](subsys-multimedia-video-play-guide.md)
    - [Development Guidelines on Media Recording](subsys-multimedia-video-record-guide.md)
- [Utils](subsys-utils.md)
  - [Utils Overview](oem_subsys_utils_des.md)
  - [Utils Development Guidelines](oem_subsys_utils_guide.md)
  - [Utils FAQ](oem_subsys_utils_faq.md)
- [AI Framework](subsys-aiframework.md)
  - [AI Engine Framework](subsys-aiframework-guide.md)
  - [Development Environment](subsys-aiframework-envbuild.md)
  - [Technical Specifications](subsys-aiframework-tech.md)
    - [Code Management](subsys-aiframework-tech-codemanage.md)
    - [Naming](subsys-aiframework-tech-name.md)
    - [API Development](subsys-aiframework-tech-interface.md)
  - [Development Guidelines](subsys-aiframework-devguide.md)
    - [SDK](subsys-aiframework-devguide-sdk.md)
    - [Plug-in](subsys-aiframework-devguide-plugin.md)
    - [Configuration File](subsys-aiframework-devguide-conf.md)
  - [Development Examples](subsys-aiframework-demo.md)
    - [KWS SDK](subsys-aiframework-demo-sdk.md)
    - [KWS Plug-in](subsys-aiframework-demo-plugin.md)
    - [KWS Configuration File](subsys-aiframework-demo-conf.md)
- [Data Management](subsys-data.md)
  - [RDB](subsys-data-relational-database.md)
    - [RDB Overview](subsys-data-relational-database-overview.md)
    - [RDB Development](subsys-data-relational-database-guide.md)
- [Sensors](subsys-sensor.md)
  - [Sensors Overview](subsys-sensor-overview.md)
  - [Sensors Usage Guidelines](subsys-sensor-guide.md)
  - [Sensors Usage Example](subsys-sensor-demo.md)
- [Application Framework](subsys-application-framework.md)
  - [Overview](subsys-application-framework-overview.md)
  - [Setting Up a Development Environment](subsys-application-framework-envbuild.md)
  - [Development Guidelines](subsys-application-framework-guide.md)
  - [Development Example](subsys-application-framework-demo.md)
- [OTA Upgrade](subsys-ota-guide.md)
- [Telephony Service ](subsys-tel.md)
  - [Telephony Service](telephony-service.md)
  - [Development Guidelines](development-guidelines.md)
- [Security](subsys-security.md)
  - [Overview](subsys-security-overview.md)
  - [Development Guidelines on Application Signature Verification](subsys-security-sigverify.md)
  - [Development Guidelines on Application Permission Management](subsys-security-rightmanagement.md)
  - [Development Guidelines on IPC Authentication](subsys-security-communicationverify.md)
- [Startup](subsys-boot.md)
  - [Startup](subsys-boot-overview.md)
  - [init Module](subsys-boot-init.md)
  - [appspawn Module](subsys-boot-appspawn.md)
  - [bootstrap Module](subsys-boot-bootstrap.md)
  - [syspara Module](subsys-boot-syspara.md)
  - [FAQs](subsys-boot-faqs.md)
  - [Reference](subsys-boot-ref.md)
- [Testing](subsys-testguide-test.md)
- [DFX](subsys-dfx.md)
  - [DFX](subsys-dfx-overview.md)
  - [Development Guidelines on HiLog ](subsys-dfx-hilog-rich.md)
  - [Development Guidelines on HiLog\_Lite](subsys-dfx-hilog-lite.md)
  - [Development Guidelines on HiTrace](subsys-dfx-hitrace-development.md)
  - [Development Guidelines on HiCollie](subsys-dfx-hicollie-development.md)
  - [Development Guidelines on HiSysEvent](subsys-dfx-hisysevent.md)
    - [subsys-dfx-hisysevent-logging](subsys-dfx-hisysevent-logging.md) 
    - [subsys-dfx-hisysevent-listening](subsys-dfx-hisysevent-listening.md) 
    - [subsys-dfx-hisysevent-query](subsys-dfx-hisysevent-query.md) 
    - [subsys-dfx-hisysevent-tool-usage](subsys-dfx-hisysevent-tool-usage.md) 
- [R&D Tools](subsys-toolchain.md)
  - [bytrace Usage Guidelines](subsys-toolchain-bytrace-guide.md)
  - [hdc\_std Usage Guidelines](oem_subsys_toolchain_hdc_guide.md)
- [XTS](subsys-xts-guide.md)