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CUPS is developed by Apple Inc. and distributed as open source software under
-the Apache License, Version 2.0. Significant contributions to CUPS must be
-licensed to Apple using the Apple Contributor Agreement:
+the Apache License, Version 2.0 with exceptions to allow linking to GPL2/LGPL2
+code. Significant contributions to CUPS must be licensed to Apple using the
+Apple Contributor Agreement:
https://www.cups.org/AppleContributorAgreement_2011-03-10.pdf
-Contributions should be submitted as attachments to bug reports on the CUPS web
-site. Changes to existing source files should be submitted as unified diffs
-(both Subversion and Git produce this format by default) while new source files
+Contributions should be submitted as attachments to bug reports on the
+[CUPS Github project](https://github.com/apple/cups). Changes to existing
+source files should be submitted as unified diffs while new source files
should be provided as-is or in an archive. Github pull requests can also be
used to submit changes.