If you enable this setting, then IE Tab will enable script url mitigation. You can read more about this feature here: https://msdn.microsoft.com/en-us/library/dd565656(v=vs.85).aspx. And here: https://msdn.microsoft.com/en-us/library/ee330735(v=vs.85).aspx
If you disable this setting, then IE Tab will not use IE's script URL mitigation feature.
| Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
| Registry Path | Software\Policies\IE Tab\IE Tab |
| Value Name | ScriptUrlMitigation |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |