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+<head>
+<title>UK TeX FAQ -- question label noline</title>
+</head><body>
+<h3>No line here to end</h3>
+<p>The error
+<blockquote>
+<pre>
+! LaTeX Error: There's no line here to end.
+
+See the LaTeX manual or LaTeX Companion for explanation.
+</pre>
+
+</blockquote>
+comes in reaction to you giving LaTeX a <code>\</code><code>\</code> command at a time
+when it's not expecting it.  The commonest case is where you've
+decided you want the label of a list item to be on a line of its own,
+so you've written (for example):
+<blockquote>
+<pre>
+\begin{description}
+\item[Very long label] \\
+  Text...
+\end{description}
+</pre>
+</blockquote>
+<code>\</code><code>\</code> is actually a rather bad command to use in this case (even if
+it worked), since it would force the 'paragraph' that's made up of the
+text of the item to terminate a line which has nothing on it but the
+label.  This would lead to an "<code>Underfull \hbox</code>" warning message
+(usually with 'infinite' badness of 10000); while this message doesn't
+do any actual harm other than slowing down your LaTeX run, any
+message that doesn't convey any information distracts for no useful
+purpose.
+<p>The proper solution to the problem is to write a new sort of
+<code>description</code> environment, that does just what you're after.  (The
+
+<a href="FAQ-books.html"><em>LaTeX Companion</em></a> offers a
+rather wide selection of variants of these things.)
+<p>The quick-and-easy solution, which avoids the warning, is to write:
+<blockquote>
+<pre>
+\begin{description}
+\item[Very long label] \hspace*{\fill} \\
+  Text...
+\end{description}
+</pre>
+</blockquote>
+which fills out the under-full line before forcing its closure.  The
+<i>expdlist</i> package provides the same functionality with its
+<code>\</code><code>breaklabel</code> command, and <i>mdwlist</i> provides it via its
+<code>\</code><code>desclabelstyle</code> command.
+<p>The other common occasion for the message is when you're using the
+<code>center</code> (or <code>flushleft</code> or <code>flushright</code>)
+environment, and have decided you need extra separation between lines
+in the environment:
+<blockquote>
+<pre>
+\begin{center}
+  First (heading) line\\
+  \\
+  body of the centred text...
+\end{center}
+</pre>
+</blockquote>
+The solution here is plain: use the <code>\</code><code>\</code> command in the way it's
+supposed to be used, to provide more than just a single line break
+space.  <code>\</code><code>\</code> takes an optional argument, which specifies how much
+extra space to add; the required effect in the text above can be had
+by saying:
+<blockquote>
+<pre>
+\begin{center}
+  First (heading) line\\[\baselineskip]
+  body of the centred text...
+\end{center}
+</pre>
+</blockquote>
+<dl>
+<dt><tt><i>expdlist.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/expdlist.zip">macros/latex/contrib/expdlist</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/expdlist.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/expdlist/">browse</a>)
+<dt><tt><i>mdwlist.sty</i></tt><dd>Distributed as part of <a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/mdwtools.zip">macros/latex/contrib/mdwtools</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/mdwtools.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/mdwtools/">browse</a>)
+</dl>
+<p><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=noline">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=noline</a>
+</body>