agr - agreement between parts of speech

awk - awkward construction or usage

cap/no cap - errors in capitalization

cit - missing source citation, or, error in form of citation

del - delete (redundant or unnecessary)

frag - sentence fragment/verb missing

fs - fused ("run-on" sentence)

no ¶ - no new paragraph needed

¶ - begin new paragraph

p - punctuation error

sp - misspelled word

ww - wrong word or incorrect usage

? - meaning unclear/explain

ex - example or illustration needed: support