Positive CTL was one of the vocabulary words listed on the chart "A Tunnel in the Sky". This chart was seen in the schoolroom aboard Deep Space 9 in 2369. A region of the Bajoran wormhole was called the positive CTL region. (DS9: "In the Hands of the Prophets")

See also[]

• Negative CTL

Community content is available under the CC-BY-NC license unless otherwise noted.