17e6ec08_Proofreader_s_Marks__Meaning
[Symbol] frag [Explanation] This is when a sentence lacks a subject and a verb or when it is a dependent clause and therefore can not stand alone as a sentence. Often you can revise this error by linking the fragment to the sentence before or after it, though sometimes it is better to add the subject. [Meaning] 
fragment
Proofreader's Marks
Meaning