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+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _compat:
+
+*******
+Changes
+*******
+
+The following chapters document the evolution of the V4L2 API, errata or
+extensions. They are also intended to help application and driver
+writers to port or update their code.
+
+
+.. toctree::
+ :maxdepth: 1
+
+ diff-v4l
+ hist-v4l2