ps://www.rdocumentation.org/packages/base/topics/c">c</a></span>(<span class="st">"chr1"</span>, <span class="st">"chr1"</span>, <span class="st">"chr2"</span>, <span class="st">"chr3"</span>),</a>
<a class="sourceLine" id="cb5-3" data-line-number="3">             <span class="dt">start =</span> <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/c">c</a></span>(<span class="dv">100</span>, <span class="dv">200</span>, <span class="dv">300</span>, <span class="dv">400</span>),</a>
