There are some editorial and editorial habits, the non-fulfillment of which is not a linguistic error, but the inclusion of which proves the author's high personal culture. This is the case, for example, when removing single-letter conjunctions from the end of lines of justified text. Here you have to use the "Find and Replace" option on regular expressions, which is not particularly difficult but requires the right sources to be consulted.
Much more significant errors remain in the documents, e.g., an incomplete or incorrectly inserted table of contents. Instead of using the editor's tools, many people write tables of contents by hand, which is inconvenient and unsightly. Likewise, chaos often creeps into footnotes or comments. If they are to remain in the document, each of the editors should put in order - remove comments left for themselves and write the rest in a language that others can understand.
Finally, it is also worth protecting the title page, if there is one in the document, reviewing the structure of the paragraphs (preferably by tracking bastards and widows), possible hyphenation rules, and to be sure, it is also worth opening the file after changing the format to be sure that even the smallest details remain unchanged from the original version.