MEX files (MATLAB executables) are the dynamically loadable object files created by compiling such functions. Some loadable kernel modules in macOS can be loaded automatically. Modern operating systems support extensibility through device drivers and loadable kernel modules. Most operating systems supporting loadable kernel modules will include modules to support most desired functionality. GVfs provides implementations for various network file systems as loadable modules. It shows which loadable kernel modules are currently loaded. Implementations for various network file systems are provided by the GVfs package as loadable modules. Each driver is hardware specific and implemented as a separate loadable module. OpenSimulator uses loadable modules for most of its functionality. UnixWare includes a dynamically loadable device driver "marry"(7) and the utility "marry"(1M). The GVfs support for volume monitoring is included in a separate loadable module. It supports PPAPI plugins and extensions, both internal (PDF viewer) or externally loadable. Effects, such as a minimization animation or a cube workspace, are implemented as loadable plugins. It was compatible with third party client and server utilities and NetWare Loadable Modules. Passenger vehicles include seating, while cargo vehicles have a loadable interior.