Fuchsia has this reference documentation:

  • FIDL

    FIDL (or "Fuchsia Interface Definition Language") is the IPC system for Fuchsia.

  • System Calls

    System calls allow you to make requests from the user space into the Zircon kernel.

  • Kernel

    The Zircon kernel receives a textual commandline from the bootloader, which can be used to alter some behaviours of the system.