Where's the "Standard Error" metrics in CBI come from?

Hi, I've some questions that where's the "Standard Error" which is stat object in CBI come from?
Is it calculate from average profit / loss of all trade?

Thank you very much.

No it is standard error of portfolio Equity line. All described in manual:
http://www.amibroker.com/guide/w_report.html

Thank you again , Mr Tomasz