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+CMAKE_PROJECT_VERSION
+---------------------
+
+The version of the top level project.
+
+This variable holds the version of the project as specified in the top
+level CMakeLists.txt file by a :command:`project` command. In the event that
+the top level CMakeLists.txt contains multiple :command:`project` calls,
+the most recently called one from that top level CMakeLists.txt will determine
+the value that ``CMAKE_PROJECT_VERSION`` contains. For example, consider
+the following top level CMakeLists.txt:
+
+.. code-block:: cmake
+
+ cmake_minimum_required(VERSION 3.0)
+ project(First VERSION 1.2.3)
+ project(Second VERSION 3.4.5)
+ add_subdirectory(sub)
+ project(Third VERSION 6.7.8)
+
+And ``sub/CMakeLists.txt`` with the following contents:
+
+.. code-block:: cmake
+
+ project(SubProj VERSION 1)
+ message("CMAKE_PROJECT_VERSION = ${CMAKE_PROJECT_VERSION}")
+
+The most recently seen :command:`project` command from the top level
+CMakeLists.txt would be ``project(Second ...)``, so this will print::
+
+ CMAKE_PROJECT_VERSION = 3.4.5
+
+To obtain the version from the most recent call to :command:`project` in
+the current directory scope or above, see the :variable:`PROJECT_VERSION`
+variable.