Reads the current thread's identity. Reads the thread's current namecall atom. Returns the actual metatable, ignoring __metatable protection. Hooks an existing function-valued metamethod and returns the original callable. Reads a table's native readonly flag. Reads a table's native safeenv flag. Sets a table's readonly flag. Clears a table's readonly flag. Updates the calling thread's identity and capabilities through the scheduler. Changes the current thread's namecall atom. Sets the raw metatable and returns the original value. Sets a table's native readonly flag. Updates the native safeenv flag on a table or the environment of a function/thread.