Changes

''Holodecks'' and ''holosuites'' (the latter on Deep Space Nine) are rooms containing ''holoprojectors'' that project holographic images with solidity, allowing people to interact with the images.  A computer controls the images, which includes holographic people who appear just like real people.

''Holodecks'' and ''holosuites'' (the latter on Deep Space Nine) are rooms containing ''holoprojectors'' that project holographic images with solidity, allowing people to interact with the images.  A computer controls the images, which includes holographic people who appear just like real people.

The ''Voyager'' series introduced an "emergency medial hologram", a holographic doctor which could be activated in the case of an emergency.

The ''Voyager'' series introduced an "emergency medical hologram", a holographic doctor which could be activated in the case of an emergency.

In this case, the ship's real doctor was killed, and the holographic doctor was a regular character, with enhanced abilities including being able to activate and deactivate himself.

In this case, the ship's real doctor was killed, and the holographic doctor was a regular character, with enhanced abilities including being able to activate and deactivate himself.

He also managed to acquire a portable holographic projector that he could wear, allowing him to leave the confines of the ship's sick bay and its fixed holographic projectors.

He also managed to acquire a portable holographic projector that he could wear, allowing him to leave the confines of the ship's sick bay and its fixed holographic projectors.