Hiding a target result

[Colin Elliott]

I think this has been already raised here, so I'm sorry not having paid
enough attention about it:
is there a way to "hide" the result of a given target.
Instead of having the following output, for example:
Target1:
Target2:
Target3: blah blah blah

I would like to specify Target1 and Target2 has being "quiet" and have the
following output:
Target3: blah blah blah

Sylvain