I'm using the online tool shareLatex, when I compile the document I have some random blackbox appears in the right-side of the document. I have no errors in the document. Does anyone knows what is the reason of these black boxes.
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draftoption. These boxes indicate overfull lines. – samcarter_is_at_topanswers.xyz Dec 07 '17 at 15:13draftis set. The black boxes mark lines which are too long. Click the "Logs and output file" button (next to the "Recompile" button) to see the messages regarding overfull boxes. – esdd Dec 07 '17 at 15:15