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+PR_Initialize
+=============
+
+Provides an alternate form of explicit initialization. In addition to
+establishing the sequence of operations, :ref:`PR_Initialize` implicitly
+calls :ref:`PR_Cleanup` on exiting the primordial function.
+
+
+Syntax
+------
+
+.. code::
+
+   #include <prinit.h>
+
+   PRIntn PR_Initialize(
+     PRPrimordialFn prmain,
+     PRIntn argc,
+     char **argv,
+     PRUintn maxPTDs);
+
+
+Parameters
+~~~~~~~~~~
+
+:ref:`PR_Initialize` has the following parameters:
+
+``prmain``
+   The function that becomes the primordial thread's root function.
+   Returning from prmain leads to termination of the process.
+``argc``
+   The length of the argument vector, whether passed in from the host's
+   program-launching facility or fabricated by the actual main program.
+   This approach conforms to standard C programming practice.
+``argv``
+   The base address of an array of strings that compromise the program's
+   argument vector. This approach conforms to standard C programming
+   practice.
+``maxPTDs``
+   This parameter is ignored.
+
+
+Returns
+~~~~~~~
+
+The value returned from the root function, ``prmain``.
+
+
+Description
+-----------
+
+:ref:`PR_Initialize` initializes the NSPR runtime and places NSPR between
+the caller and the runtime library. This allows ``main`` to be treated
+like any other function, signaling its completion by returning and
+allowing the runtime to coordinate the completion of the other threads
+of the runtime.
+
+:ref:`PR_Initialize` does not return to its caller until all user threads
+have terminated.
+
+The priority of the main (or primordial) thread is
+``PR_PRIORITY_NORMAL``. The thread may adjust its own priority by using
+:ref:`PR_SetThreadPriority`.