1# Readme 2 3- [Ability framework](js-apidiff-ability.md) 4- [Accessibility service](js-apidiff-accessibility.md) 5- [Account subsystem](js-apidiff-account.md) 6- [AI subsystem](js-apidiff-ai.md) 7- [System Applications](js-apidiff-application.md) 8- [ArkUI development framework](js-apidiff-arkui.md) 9- [Battery service](js-apidiff-battery.md) 10- [Bundle management framework](js-apidiff-bundle.md) 11- [Communication subsystem](js-apidiff-communication.md) 12- [Compiler and runtime subsystem](js-apidiff-compiler-and-runtime.md) 13- [Customization subsystem](js-apidiff-customization.md) 14- [DFX subsystem](js-apidiff-dfx.md) 15- [Distributed data management subsystem](js-apidiff-distributed-data.md) 16- [Distributed hardware subsystem](js-apidiff-distributed-hardware.md) 17- [Upload and download](js-apidiff-download-upload.md) 18- [Driver subsystem](js-apidiff-driver.md) 19- [File management subsystem](js-apidiff-file-management.md) 20- [Geolocation subsystem](js-apidiff-geolocation.md) 21- [Globalization subsystem](js-apidiff-global.md) 22- [Graphic subsystem](js-apidiff-graphic.md) 23- [Misc services subsystem](js-apidiff-misc.md) 24- [MSDP subsystem](js-apidiff-msdp.md) 25- [Multimodal input subsystem](js-apidiff-multi-modal-input.md) 26- [Multimedia subsystem](js-apidiff-multimedia.md) 27- [Common event and notification subsystem](js-apidiff-notification.md) 28- [Resource scheduler subsystem](js-apidiff-resource-scheduler.md) 29- [SDK](js-apidiff-sdk.md) 30- [Security subsystem](js-apidiff-security.md) 31- [Pan-Sensor subsystem](js-apidiff-sensor.md) 32- [Startup subsystem](js-apidiff-start-up.md) 33- [Telephony subsystem](js-apidiff-telephony.md) 34- [Test framework](js-apidiff-unitest.md) 35- [Update subsystem](js-apidiff-update.md) 36- [USB subsystem](js-apidiff-usb.md) 37- [User IAM](js-apidiff-user-iam.md) 38- [Web subsystem](js-apidiff-web.md) 39- [Window manager subsystem](js-apidiff-window.md)