G is encoded using 2 -> log G -> + 1 bits
Length of offset is -> log G -> bits
Length of length is -> log G -> + 1 bits
All gamma codes have an odd number of bits
Almost within a factor of 2 of best possible, log2 G
Gamma code is uniquely prefix-decodable, like VB
Gamma code can be used for any distribution
Gamma code is parameter-free