In the documentation on the Rendering and Graphics overview pages, the section about lightung speaks about “glogal” illumination.
Either a typo, or a new cutting edge technolgy, unheard of before
As far as I know, ‘Glogal’ illumination has yet to exist for Rendering and Graphics, and I don’t think it ever will. I have gone in and change this spelling on this page. The correction will show live after the next publishing.
Thanks for pointing out this error and have a great day!