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+---
+layout: page
+title: License
+menu: false
+permalink: license
+---
+
+The source code for Octave is freely redistributable under the
+terms of the [GNU General Public License (GPL)][1] as published by
+the [Free Software Foundation][2].
+
+Simply put, the GPL says that anyone who redistributes the
+software, with or without changes, must pass along the freedom to
+further copy and change it.  By distributing the complete source
+code for GNU Octave under the terms of the GPL, we guarantee that
+you and all other users will have the freedom to redistribute and
+change Octave.
+
+Releasing the source code for Octave has another benefit as well.
+By having access to all of the source code for a mathematical
+system like Octave, you have the ability to see *exactly*
+how each and every computation is performed.  There are no black
+boxes that hide the details of any calculation.
+
+Although enhancements to Octave that are written as function files
+in Octave's scripting language are not required to be
+redistributed under the terms of the GPL, we encourage you to
+release your enhancements to Octave under the same terms for the
+benefit of all users.  We also encourage you to
+[get involved with the Octave project][3] and submit your changes
+for inclusion in future versions of Octave.
+
+[1]: https://www.gnu.org/copyleft/gpl.html
+[2]: https://www.fsf.org/
+[3]: {{ "get-involved.html" | relative_url }}