Mini-class (so not own file) used to hold encode decode info related to Mod9 encoding (as variant of Simplified-9 specify to Yioop).
Mod9 is used to incode a sequence of positive (greater than 0) integers as a string. WARNING: do not expect is to work/decode correctly if sequence has a 0 as the decoding process assumes 0 indicates end of sequence.
$MOD9_NUM_ELTS_CODES :
Used in Modified 9 encoding. Key values are the number of elements we would like to store in the current word. Values are the bit prefix to use on first byte of word. Notices bits 7 and 6 (128 and 64) are not parts of prefixes as used for continuation bits.