83. A system as defined in claim 82, wherein the means for discarding adds padding dictionary segments to the system-built dictionary, if the actual number of entries of the dictionary is less than the selected fixed size, such that the size of the resulting system-built dictionary is equal to the selected fixed size.
82. A system as defined in claim 81, wherein the set of predetermined fixed sizes comprises 512, 1K, 2K, 4K, and 8K dictionary entries.