A room in which a virtual environment may be created. The Holojoint on the SCS DeepShip 86 is referred to as the "Holocabana".
The Holojoint can recreate any environment for which a program exists. To start a program, enter the program number and press enter.
Warning: All materials in the Holojoint are made from Virtu-Plast, a virtual material that cannot exist outside of the Holojoint environment.
Attempting to remove any Virtu-Plast item from the Holojoint environment will result in their immediate disintegration.
So don't think you're going to go in there and conjure up something useful and then leave and expect it to still be in your inventory.
This technology is a spoof of [http://www.memory-alpha.org/en/wiki/Holodeck Star Trek's holodeck.