Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Other key components of a Linux system may use other licenses ; many libraries use the GNU Lesser General Public License ( LGPL ) , a type of the GPL that is less restricted , and the X Window System uses the MIT License .
Other key components of a typical Linux distribution are also mainly licensed under the GPL , but they may use other licenses ; many libraries use the GNU Lesser General Public License ( LGPL ) , a more permissive variant of the GPL , and the X.Org implementation of the X Window System uses the MIT License .