Common Proofreading/Editing Abbreviations: The abbreviation usually appears in the margin, probably with a line or arrow pointing to the offending element.

Abbreviation	Meaning	Example
Ab	a faulty abbreviation	She had earned a Phd along with her M.D.
Agr See also P/A and S/V	agreement problem: subject/verb or pronoun/antecedent	The piano as well as the guitar need tuning. The student lost their book.
Awk	awkward expression or construction	The storm had the effect of causing millions of dollars in damage.
Cap	faulty capitalization	We spent the Fall in spain.
CS	comma splice	Raoul tried his best, this time that wasn't good enough.
D	faulty diction	Due to the fact that we were wondering as to whether it would rain, we stayed home.
DC	Faulty diction - connotation	When Oedipus learns his true parentage, his fortune takes it in the butt.
DD	Faulty diction - denotation	I wish that she would not underscore my position and belittle me as she does.
DM	dangling construction	Working harder than ever, this job proved to be too much for him to handle.
- ed	problem with final -ed	Last summer he walk all the way to Birmingham.
Frag	fragment	Depending on the amount of snow we get this winter and whether the towns buy new trucks.
//	problem in parallel form	My income is bigger than my wife.
P-A	pronoun/antecedent agreement	A student in accounting would be wise to see their advisor this month.
Pron	problem with pronoun	My aunt and my mother have wrecked her car. The committee has lost their chance to change things. You'll have to do this on one's own time.
Rep	unnecessary repetition	The car was blue in color.
R-O	run-on sentence	Raoul tried his best this time that wasn't good enough.
Sp	spelling error	This sentence is flaude with two mispelllings.
- s	problem with final -s	He wonder what these teacher think of him.
S/V	subject/verb agreement	The problem with these cities are leadership.
Tense	verb tense problem	He comes into the room and he pulled his gun.
Wdy	wordy	Seldom have we perused a document so verbose, so ostentatious in phrasing, so burdened with too many words.
WW	wrong word	What affect did the movie have on Sheila?
Source: University of Colorado Web site (http://www.colorado.edu/Publications/styleguide/symbols.html).