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+PR_NEWZAP
+=========
+
+Allocates and clears memory from the heap for an instance of a given
+type.
+
+
+Syntax
+------
+
+.. code::
+
+   #include <prmem.h>
+
+   _type * PR_NEWZAP(_struct);
+
+
+Parameter
+~~~~~~~~~
+
+``_struct``
+   The name of a type.
+
+
+Returns
+~~~~~~~
+
+An pointer to a buffer sized to contain the type ``_struct``, or if the
+allocation attempt fails, ``NULL``. The bytes in the buffer are all
+initialized to 0. Call ``PR_GetError()`` to retrieve the error returned
+by the libc function.
+
+
+Description
+-----------
+
+This macro allocates an instance of the specified type from the heap and
+sets the content of that memory to zero.