meaning of desktop publishing

[Thunu]

Business English Lesson, Advanced Level

ESL/EFL Test #137 "Secretarial Office Procedures", question 8

Today, more and more secretarial staff use PCs to run database management, ......... publishing, and computer graphics software.

(a) desktop
(b) keyboard
(c) virtual
(d) workstation

Business English Lesson, Advanced Level

ESL/EFL Test #137 "Secretarial Office Procedures", answer 8

Today, more and more secretarial staff use PCs to run database management, desktop publishing, and computer graphics software.

Correct answer: (a) desktop
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Can you explain the meaning of desktop publishing in this sentence, please?

Thank you
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Reach an agreement as ploughing, don't let argument happen at crops.

[Mister Micawber]

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DESKTOP PUBLISHING
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Native English teacher at Mister Micawber's