Booster里面的一句话，什么意思？

veff

[UNSUPPORTED FEATURES]

- Booster has TOS Low Delay bit tweak (Type of service) which should make packets go to client smaller latency.
Use -tos commandline option on hlds.exe to activate TOS low delay tweak. You have to set following registry setting to allow this tweak to work (only Windows 2000/XP):

Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Value name: DisableUserTOSSetting
Value type: DWORD
Value data: 0

建这个键值有什么作用？谁能帮翻译翻译？:)