Running distance-code-31.deflate through script/print-bits.go and adding
commentary:

    offset  xoffset ASCII   hex     binary
    000000  0x0000  .       0x03    0b_...._.011  Fixed Huffman block, final
    000000  0x0000  .       0x03    0b_0000_0...  lcode:  257  length:        3
    000001  0x0001  ~       0x7E    0b_...._..10
    000001  0x0001  ~       0x7E    0b_.111_11..  dcode:   31  INVALID