Copyrighted proudly by wangyoutian@nilnul.com ;
It's made open and with the persistence/presentation of knowledge for education in mind; To help it going forward faster, please consider donation to us;
This software is free of charge for personal noncommercial use.

For commercial supported use, licensed humbly as follows: 
The initial 6 months are free; afterwards, the price is $1 per cpu core per month ( or $9 per cpu core per year). (Note: if a package is a unit testing, it's free - even for commercial use).

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Personal noncommercial use means:
-it's installed on computer owned by an individual person;
-and it's not used as part of a commodity|service to sell;

Commercial use means:
- it is installed on a computer owned by an organization, not a person;
- or it's used as part of or in the process of a commoditiy/service that is for sale;