[Photo provided to chinadaily.com.cn] The Sanjiangyuan region, or Three River Source, in the Qinghai-Tibet Plateau, is viewed as the home of the headstreams of the country's three major rivers ...

Open Source Point of Sale is a web-based point of sale system. The application is written in PHP, uses MySQL (or MariaDB) as the data storage back-end, and has a simple but intuitive user interface.