ystem for labelling part of the pipeline. This
captures data in a tag-value list during the pipeline, and retains it as
metadata for later reuse.</p>
<div class="sourceCode" id="cb4"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span></span>
<span><span class="va">demo_data</span> <span class="op">=</span> <span class="fu">survival</span><span class="fu">::</span><span class="va"><a href="https://rdrr.io/pkg/survival/man/cgd.html" class="external-link">cgd</a></span> <span class="op"><a hre