/* begin * freeglut 3.4.0 (alternative GLUT library) freeglut is a completely OpenSourced alternative to the OpenGL Utility Toolkit (GLUT) library. GLUT (and hence freeglut) allows the user to create and manage windows containing OpenGL contexts on a wide range of platforms and also read the mouse, keyboard, and joystick functions. Homepage: https://freeglut.sourceforge.net * end */