Silk Performer is a multibyte character set (MBCS) based application. When you use browser-driven load testing, you must set the correct system codepage. This ensures that the characters displayed on the website are processed correctly.
To enable browser-driven load testing of websites that use non-displayable characters, Silk Performer converts these characters. For example: The following string is converted to a set of numbers:
The numbers represent the Unicode value of each character in the hexadecimal format. When you replay a script, Silk Performer converts the string back and uses it while driving the browser.