Discouraging comments at http://www.x.org/releases/X11R7.7/doc/xorg-docs/License.html :
"Most of these licenses are based on the MIT, X Consortium, or BSD (original and revised) licenses. All of them are consistent with the Open Source Definition, and most are consistent with the Free Software Foundation's Free Software Definition. While the current licenses are all open source licenses, the X.Org Foundation is attempting, over time, to bring as much as possible of the code's licenses in the distribution into compliance with the Debian Free Software Guidelines." So some are inconsistent with the FSF definition of a free license. But which ones? Andreas
