Operating System (OS)
The category of software most appropriate for controlling the design and layout of complex document like newsletters and brochure is:

Computer aided design
Web page authoring
Word processing
Desktop publishing

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Operating System (OS)
A spooler is a

Message sent from the printer to the operating system when a print job is completed
Queue of print job that are waiting to print
Program that coordinates the print job that are waiting to process
Location in memory that maintains the contents of documents until it prints

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