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Possible Duplicate:
Long underscore in LaTeX

a sample output would be like:

__________ hello

__________ hello
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marked as duplicate by Werner, Peter Grill, yo', egreg, Stefan Kottwitz Nov 11 '12 at 13:31

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Something here or here might help you. For more options, search the site for "long underscore". – Scott H. Nov 11 '12 at 3:20
I think you should take a look here .... at the point \newcommand{\Qline}[1]{\noindent\rule{#1}{0.6pt}} – karathan Nov 11 '12 at 12:57
up vote 7 down vote accepted

You can write it in a number of ways, but the easiest is probably \rule{<len>}{<width>} hello where you specify <len> and <width>. Typically, <width> is 0.4pt.

enter image description here

\rule{10em}{0.4pt} hello \par
\rule{50pt}{1pt} hello

In a more general setting, see Long underscore in LaTeX.

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