The "Standard VSLua License" is a special license for research, personal usage and small start-up companies. It contains almost all the features available in the "Professional" license. Please review the "Features Comparison" for a more complete comparison.
Apart from product features, the Standard license does not permit you to use the software in developing commercial applications if company's annual revenues $500,000 or more.
Limited, non-priority based email support is given to "Standard" licensees.
For details please review the "Standard License Agreement".