Windows Seven netsh dhcpclient command

Microsoft Windows [Version 6.1.7000]
(C) Copyright 2009 Microsoft Corp.

C:\Windows>netsh dhcpclient ?
list                          - Lists all the commands available.
help                          - Displays help.
?                             - Displays help.
trace                         - Enable or disable tracing for DHCP client  and DHCP QEC, Dump the last 100 traces. 

C:\Windows>netsh dhcpclient help ?

Usage: help

       Displays help.

C:\Windows>netsh dhcpclient list ?

Usage: list

       Lists all the commands available.

C:\Windows>netsh dhcpclient trace ?

trace enable|disable       - Enables/Disables tracing for DHCP client and DHCP QEC.

trace dump                 - Dumps the last 100 traces.

C:\Windows>netsh dhcpclient trace dump ?
The requested operation requires elevation (Run as administrator).

C:\Windows>netsh dhcpclient trace enable|disable ?
'netsh dhcpclient trace enable|disable' is not recognized as an internal or external command,
operable program or batch file.