This mission is identical to the Cloak mission, see there for details. It is provided simply so that ships not recognized by client programs (DOS Planets, for example) as having cloaking devices can still cloak, assuming that PHost recognizes them as being able to cloak. This may occur when the hullfunc.txt interface is used to give cloaking capability to traditionally non-cloaking ships.
This mission is is intended for client programs that do not have explicit PHost support. If your client program does support PHost, it will most likely let you use the normal Cloak mission.
The Cloak extended mission can also be set using the extmission command.
