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+PR_CloseFileMap
+===============
+
+Closes a file mapping.
+
+
+Syntax
+------
+
+.. code::
+
+   #include <prio.h>
+
+   PRStatus PR_CloseFileMap(PRFileMap *fmap);
+
+
+Parameter
+~~~~~~~~~
+
+The function has the following parameter:
+
+``fmap``
+   The file mapping to be closed.
+
+
+Returns
+~~~~~~~
+
+The function returns one of the following values:
+
+-  If the memory region is successfully unmapped, ``PR_SUCCESS``.
+-  If the memory region is not successfully unmapped, ``PR_FAILURE``.
+   The error code can be retrieved via :ref:`PR_GetError`.
+
+
+Description
+-----------
+
+When a file mapping created with a call to :ref:`PR_CreateFileMap` is no
+longer needed, it should be closed with a call to :ref:`PR_CloseFileMap`.