Proofreaders' Marks - The Chicago Manual of Style Online
https://www.chicagomanualofstyle.org/help-tools/proofreading-marks.html
WEBFind it. Write it. Cite it. The Chicago Manual of Style Online is the venerable, time-tested guide to style, usage, and grammar in an accessible online format. ¶ It is the indispensable reference for writers, editors, proofreaders, indexers, copywriters, designers, and publishers, informing the editorial canon with sound, definitive advice. ¶ Over 1.5 million …
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