* Returns the character unit that represents the given value.

* Used to build a rank directory from the given input string.

* Returns the decimal value of the given character unit.

* Fixed values for the L1 and L2 table sizes in the Rank Directory */.

* The width of each unit of the encoding, in bits.

* Given a string of data (eg, in BASE-64), the BitString class supports reading or counting a number of bits from an arbitrary position in the string.

* The BitWriter will create a stream of bytes, letting you write a certain number of bits at a time.

* The FrozenTrie is used for looking up words in the encoded trie.

* This class is used for traversing the succinctly encoded trie.

* The rank directory allows you to build an index to quickly compute the rank() and select() functions.

* A Trie node, for use in building the encoding trie.