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 <p><em>Open-source modular toolkit for simulating high-fidelity pulsar X-ray events.</em> </p>
 <h2 id="introduction-to-openxnav"><strong>Introduction to OpenXNAV</strong></h2>
 <p>OpenXNAV is designed to aid development and testing of Pulsar-based Autonomous Navigation (XNAV) Positioning, Navigation, and Timing (PNT) solutions.</p>
-<p>You can read our IEEE paper to learn more: <a href="https://ieeexplore.ieee.org/document/10139942">IEEE.org</a>.</p>
+<p>This tool is a flexible, cost-effective testbed to enable the next generation of XNAV solutions. OpenXNAV includes three modular components that allow engineers simulate high-fidelity pulsar X-ray events along a flight trajectory over a user-defined mission timeline. Hardware-in-the-loop functionality can be configured using software-defined radios (SDRs), and users can query for pulsar candidates using the query tool (powered by the <a href="https://atnf.csiro.au/research/pulsar/psrcat/">ATNF Pulsar Catalogue</a>). </p>
+<p>For more information, you can read our IEEE paper: <a href="https://ieeexplore.ieee.org/document/10139942">IEEE.org</a>.</p>
 <h2 id="components"><strong>Components</strong></h2>
 <ul>
 <li><a href="components/1__pulsar_querying/pq_overview/">Pulsar Querying</a></li>
 <li><a href="components/2__mission_planning/mp_overview/">Mission Planning</a></li>
 <li><a href="components/3__custom_event_generation/ceg_overview/">Timing &amp; Event Generation</a></li>
+<li><a href="components/3__custom_event_generation/ceg_overview/#hardware-in-the-loop-sdrs">Hardware In The Loop</a></li>
 </ul>