This is my own set of markings and varies from the standard copy editing set.

AG=Agreement: subject/verb, noun/pronoun, singular, plural

AWK=Awkward phrasing

?=Vague or confusing phrasing

Cap=Capitalize, Upper case (tripled underlined letter)

COL=Colloquialism

D=Diction, improper word form

HOM=Homonym error

Ital=Italicize (double underlined word or phrase)

lc=lower case (struck through letter(s))

ORG=Poor paragraph organization

¶=Paragraph break

PAS=Excessive/inappropriate use of passive voice

PN=Pronoun usage problem

PS=Incorrect use of possessive

RED=Redundant or repetitive word or phrasing

SF=Incomplete sentence

SP=Spelling error or inconsistency

SS=Overloaded or poor sentence structure

T=Inappropriate tense usage or shift

TS=Weak topic sentence

Typ=Typo / Sloppy typing

WC=Poor word choice

Other marks

#=insert space

^=insert punctuation

V=insert text

(upside down script L)=delete