> In January 2006, the X Window team switched from CVS to Git, which wowed Junio. He didn’t expect such a big project like X Window to go through the trouble of

> In January 2006, the X Window team switched from CVS to Git, which wowed Junio. He didn’t expect such a big project like X Window to go through the trouble of changing version control systems. It's the "X Window System" or just "X".