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Definition of Cue mark
1. Noun. A visual indicator, placed in an upper corner of a frame of a motion picture, to signal the projectionist to change reels ¹
¹ Source: wiktionary.com
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1. Noun. A visual indicator, placed in an upper corner of a frame of a motion picture, to signal the projectionist to change reels ¹
¹ Source: wiktionary.com