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+.. _development:
+
+================================================================================
+Development
+================================================================================
+
+These pages are primarily focused towards developers either contributing to the
+PROJ project or using the library in their own software.
+
+
+.. toctree::
+   :maxdepth: 1
+
+   quickstart
+   transformations
+   errorhandling
+   reference/index
+   cmake
+   bindings
+   migration
+
+The source code for PROJ is maintained in a
+`git repository on GitHub <https://github.com/OSGeo/PROJ>`_.
+Additionally, a collection of PROJ-compatible transformation grids
+are maintained in a `separate git repository <https://github.com/OSGeo/proj-datumgrid>`_.
+
+.. attention::
+
+    The :file:`projects.h` header and the functions related to it is considered
+    deprecated from version 5.0.0 and onwards. The header has been removed
+    PROJ in version 6.0.0 released February 1st 2019.
+
+.. attention::
+
+    The nmake build system on Windows is on longer supported in
+    version 6.0.0 on onwards. Use CMake instead.
+
+.. attention::
+
+    The :file:`proj_api.h` header and the functions related to it is
+    considered deprecated from version 5.0.0 and onwards. The header has been
+    removed in version 8.0.0 released March 1st 2021.
+
+.. attention::
+
+    With the introduction of PROJ 5, behavioural changes has been made to
+    existing functionality. Consult :ref:`differences` for the details.