Here basic of Tatami you must know.
1.Default Tatami Values.

2.When adjust some value you will got differrent tatami.

3.And Next Offset Fraction.

4.From image below (You cat set 0.00-0.99) that's mean 100x100=10000 pattern.
1. A=0.25 B=0.25 2. A=0.30 B=0.30 3. A=0.30 B=0.60
4. A=0.50 B=0.25 5. A=0.40 B=0.00 6. A=0.00 B=0.00

5.And Next Partition Line.

6.you must draw pattern 8x8 dot. That's mean you can enter only 2-8 digit.

7.This pattern is 01234321

8.This pattern is 20143
9.This pattern is 00112233

10.This pattern is 000222

11.See example here.
https://embroedery.ru/forum/index.php?topic=88184.0