All offending characters are replaced by a %, it conforms to the the Uniform Resource Locators Specification - URL (RFC 1738).
- & (Ampersand) becomes %26
- $ (Dollar Sign) becomes %24
- , (Comma) becomes %2C
- + (Plus) becomes %2B
- ; (Semi-Colon) becomes %3B
- : (Colon) becomes %3A
- ? (Question Mark) becomes %3F
- = (Equals) becomes %3D
- @ (Commercial A / At) becomes %40