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<!DOCTYPE html><html><head><title>R: An Rd Regression Test</title>
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<table style="width: 100%;"><tr><td>testit</td><td style="text-align: right;">R Documentation</td></tr></table>
<h2>An Rd Regression Test</h2>
<h3>Usage</h3>
<pre><code class='language-R'>\x \y %{}
foo(<var>x</var>, <var>y</var>, ...)
</code></pre>
<h3>Arguments</h3>
<table role = "presentation">
<tr><td><code id="x">x</code>, <code id="y">y</code></td>
<td>
<p>combined arguments, in multiple Rd lines
</p>
<p>paragraph
</p>
</td></tr>
<tr><td><code id="...">...</code></td>
<td>
<p>description of ...: ...</p>
</td></tr>
</table>
<h3>Details</h3>
<p>Included
conditional content.
</p>
<p>Escaped backslash <code>\x</code>.
</p>
<p><code>%{}</code>
</p>
<p>a link and some to known destinations:
<code>weighted.mean</code>, dito,
<code>{</code>, <span class="env">R_HOME</span>.
</p>
<p>var in <var>text</var>.
</p>
<p><code>foo(<var>x</var>, <var>y</var>)</code>.
</p>
<p>Preformatted:</p>
<pre>
Escaped backslash \x.
%{}
var in \var{text}.
foo(\var{x}, \var{y}).
From gap: pedtodot.Rd -- n=split(m,par,"\034")
</pre>
<h3>Value</h3>
<p>[NULL]<br><br>...
</p>
<h3><code style="white-space: pre;">⁠\Sexpr⁠</code></h3>
<p>Yihui Xie's example:
</p>
<dl>
<dt>def</dt><dd><p>ghi</p>
</dd></dl>
<p>–
<code style="white-space: pre;">⁠
> cat("\noutput\n")
output
⁠</code>
–
</p>
<p><code style="white-space: pre;">⁠
> x<-007
⁠</code>
</p>
<h3><code style="white-space: pre;">⁠\tabular⁠</code></h3>
<table>
<tr>
<td style="text-align: center;">
1 </td><td style="text-align: right;"> <a href="https://example.org/a&b#c">linked text in <code style="white-space: pre;">⁠\tabular⁠</code></a>
</td><td style="text-align: left;"> <a href="https://example.org/a&b#c">https://example.org/a&b#c</a></td>
</tr>
<tr>
<td style="text-align: center;">
2 </td><td style="text-align: right;"> 2nd-column entry with <em>line break</em>
in Rd source</td><td style="text-align: left;"> third
column</td>
</tr>
<tr>
<td style="text-align: center;">
--3-- </td><td style="text-align: right;"> third
row</td><td style="text-align: left;">
</td>
</tr>
</table>
<h3><code style="white-space: pre;">⁠\eqn⁠</code></h3>
<p>This should not start a new paragraph:
<code class="reqn">\frac{1}{n-1}</code>.
</p>
<h3><code style="white-space: pre;">⁠\deqn⁠</code></h3>
<p>1-arg form, centered also in text conversion:
</p>
<p style="text-align: center;"><code class="reqn">
\theta = (\mu^*, \sigma^2, \rho)
</code>
</p>
<p>2-arg form, where the text version is collapsed before centering
(for the sake of existing Rd files):
</p>
<p style="text-align: center;"><code class="reqn">E = mc^2</code>
</p>
<p>With AMS extension (R <code class="reqn">\ge</code> 4.2.2),
where the text version spans more than 3 source lines (5 in fact)
and is thus output as-is in R <code class="reqn">\ge</code> 4.4.0:
</p>
<p style="text-align: center;"><code class="reqn">
f(x) = \begin{cases}
0 & \text{if } x < 0, \\
1 & \text{if } x \ge 0.
\end{cases}
</code>
</p>
<h3>Examples</h3>
<pre><code class='language-R'>\x
%{}
## Not run: stop("doomed to fail")
foo(<var>x</var>,
<var>y</var>)
</code></pre>
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