ACE has a number of invisible target objects for mission makers to use. This allows for simulated target designation.
ACE 1.13 RC5 [2011-12-09. Hotfix: 2012-04-27]
ACE 1.13 for OA [2011-12-23]
ACE 1.3 for A2 [2010-07-05] (Deprecated)
ACE has a number of invisible target objects for mission makers to use. This allows for simulated target designation.