# Suppress black box at end of line

Under TeX, when I write a line too long, it prints a fat black box at the end of the line. That is probably a feature, but I dislike it.

How to turn that OFF? Is there a command-line option or something else?

I usually use LaTeX, but I have a complicated file which happens to be plain TeX.

• Don't fight the consequences, eliminate the cause. Nov 12 '11 at 22:02

Since you are using Plain TeX, the answer is

``````\overfullrule=0pt
``````

before the text starts.

I think the `draft` option, as mentioned by Alan, works with LaTeX classes. Try to set `\overfullrule=0pt` in Plain TeX.

See The TeXBook.

• I don't think that PDF is legal. Jul 7 '11 at 17:48
• Indeed, while the source code of The TeXBook is on CTAN creating and sharing PDFs from it is not allowed by the copyright holder. A good free alternative is TeX for the Impatient (PDF on CTAN or `texdoc impatient`). For `\overfullrule` see page 170 (PDF page 190). @egreg Jul 7 '11 at 18:10
• @Martin: I didn’t know that. Thanks for your edit :-)
– Tobi
Jul 7 '11 at 22:41