[sudo-users] Setting flags on a per command basis?

[Piete Brooks]

So far I have only been able to set flags such as:

	Defaults preserve_groups
	Defaults targetpw
	Defaults env_keep += "XAUTHORITY"

globally. I would expect to be able to set these on a per command basis, but 
I've not discovered the correct syntax. Can it be done, and if so how?  Thanks.