# 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.

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

Since you are using Plain TeX, the answer is

\overfullrule=0pt

before the text starts.

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