'Most of the rendering code for these guides will be written using my own personal rendering library, which is essentially a wrapper around OpenGL, where I abstract away the OpenGL calls or group together common OpenGL functionality into a single renderer function, to make the game code easier to manage. Anyone who understands OpenGL should have no problem translating my native renderer code back into OpenGL, and in some instances I will provide the OpenGL calls in these guides.'

Edit: Readability