TODO: new content needed

## Technology sections
* Mach subsystem and patched libc
* Hybrid Linker ("MachO ELF") dyld
* MachO image activation
* launchd
* Kqueue, Mach IPC, Grand Central Dispatch, XPC
* Clang & LLVM
* Frameworks, Bundles
* Cocoa (& KDE, Qt)
* Dock, Filer, Menus
* Using launchctl, open