SDL_Init - Initializes SDL
SDL_InitSubSystem - Initializes subsystems
SDL_QuitSubSystem - Shuts down a subsystem
SDL_Quit - Shuts down SDL
SDL_WasInit - Checks which subsystems are initialized
SDL_GetError - Gets SDL error string
SDL_SetError - Sets SDL Error
SDL_Error - Sets SDL Error from an error code
SDL_ClearError - Clear SDL current error
SDL_LoadObject - Loads a shared object.
SDL_LoadFunction - Returns the address of a function in a loaded shared object.
SDL_UnloadObject - Unloads a shared object.
SDL_envvars - SDL environment variables
SDL_VERSION - Determine the compile-time version of SDL
SDL_Linked_Version - Determine the runtime version of SDL
SDL_version - Defines an SDL version
