Analysis of information sources in references of the Wikipedia article "Copy editing" in English language version.
The heart of copyediting consists of making a manuscript conform to an editorial style (also called house style). Editorial style includes:
spelling
hyphenation
capitalization
punctuation
treatment of numbers and numerals
treatment of quotations
use of abbreviations and acronyms
use of italics and bold type
treatment of special elements (headings, lists, tables, charts, and graphs)
format of footnotes or endnotes and other documentation.