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+PR_IMPLEMENT
+============
+
+Used to define implementations of symbols that are to be exported from a
+shared library.
+
+
+Syntax
+------
+
+.. code::
+
+ #include <prtypes.h>
+
+ PR_IMPLEMENT(type)implementation
+
+
+Description
+-----------
+
+:ref:`PR_IMPLEMENT` is used to define implementations of externally visible
+routines and globals. For syntax details for each platform, see
+`prtypes.h <https://dxr.mozilla.org/mozilla-central/source/nsprpub/pr/include/prtypes.h>`__.
+
+.. warning::
+
+ **Warning**: Some platforms do not allow the use of the underscore
+ character (_) as the first character of an exported symbol.