<span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">library</a></span><span class="op">(</span><span class="va"><a href="https://github.com/nandp1/nser/" class="external-link">nser</a></span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu">nseopen</span><span class="op">(</span><span class="st">"n50"</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Pre market 