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+
+Syntax
+------
+
+.. code::
+
+ #include <plhash.h>
+
+ typedef PRUint32 PLHashNumber;
+
+ #define PL_HASH_BITS 32
+
+
+Description
+-----------
+
+``PLHashNumber`` is an unsigned 32-bit integer. ``PLHashNumber`` is the
+data type of the return value of a hash function. A hash function maps a
+key to a hash number, which is then used to compute the index of the
+bucket.
+
+The macro ``PL_HASH_BITS`` is the size (in bits) of the ``PLHashNumber``
+data type and has the value of 32.
+
+
+See Also
+--------
+
+``PLHashFunction``