Mary -
The title came from when ABC was showing promos for BSG when it was yet to be shown in 1978. Even on the night of the premiere broadcast, the voice-over referred to it as "Battlestar Galactica - The Saga of a Star World" It is now used to differentiate betweeen the ABC 3 hour broadcast and the theatrical release which was edited down a bit to keep it closer to 2 hours.
I hope this helps a bit -
Bryan
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FETISH LEATHER
