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The IBM Magnetic Tape SELECTRIC Composer (MT/SC) is a direct-impression (or “cold-type”) typesetting system that combines the recording capabilities and automatic operation of the Magnetic Tape SELECTRIC Typewriter with the proportional spacing, justification and multiple-type-size features of the SELECTRIC Composer. Intended to permit high-volume, high-quality composition at moderate cost for users of offset printing methods, its design and development are described in this paper.
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