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<h2 id="speaker-notes"><a class="header" href="#speaker-notes">Speaker notes</a></h2>
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<p>Starting on version 0.10.0, <em>presenterm</em> allows presentations to define speaker notes. The way this works is:</p>
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<ul>
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<li>You start an instance of <em>presenterm</em> using the <code>--publish-speaker-notes</code> parameter. This will be the main instance in
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which you will present like you usually do.</li>
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<li>Another instance should be started using the <code>--listen-speaker-notes</code> parameter. This instance will only display
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speaker notes in the presentation and will automatically change slides whenever the main instance does so.</li>
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</ul>
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<p>For example:</p>
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<pre><code class="language-bash"># Start the main instance
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presenterm demo.md --publish-speaker-notes
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# In another shell: start the speaker notes instance
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presenterm demo.md --listen-speaker-notes
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</code></pre>
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<p><a href="https://asciinema.org/a/ETusvlmHuHrcLKzwa0CMQRX2J"><img src="https://asciinema.org/a/ETusvlmHuHrcLKzwa0CMQRX2J.svg" alt="asciicast" /></a></p>
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<p>See the <a href="https://github.com/mfontanini/presenterm/blob/master/examples/speaker-notes.md">speaker notes example</a> for more
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information.</p>
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<h3 id="defining-speaker-notes"><a class="header" href="#defining-speaker-notes">Defining speaker notes</a></h3>
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<p>In order to define speaker notes you can use the <code>speaker_notes</code> comment command:</p>
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<pre><code class="language-markdown">Normal text
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<!-- speaker_note: this is a speaker note -->
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More text
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</code></pre>
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<p>When running this two instance setup, the main one will show "normal text" and "more text", whereas the second one will
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only show "this is a speaker note" on that slide.</p>
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<h3 id="multiline-speaker-notes"><a class="header" href="#multiline-speaker-notes">Multiline speaker notes</a></h3>
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<p>You can use multiline speaker notes by using the appropriate YAML syntax:</p>
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<pre><code class="language-yaml"><!--
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speaker_note: |
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something
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something else
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-->
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</code></pre>
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<h3 id="multiple-instances"><a class="header" href="#multiple-instances">Multiple instances</a></h3>
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<p>On Linux and Windows, you can run multiple instances in publish mode and multiple instances in listen mode at the same
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time. Each instance will only listen to events for the presentation it was started on.</p>
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<p>On Mac this is not supported and only a single listener can be used at a time.</p>
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<h3 id="enabling-publishing-by-default"><a class="header" href="#enabling-publishing-by-default">Enabling publishing by default</a></h3>
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<p>You can use the <code>speaker_notes.always_publish</code> key in your config file to always publish speaker notes. This means you
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will only ever need to use <code>--listen-speaker-notes</code> and you will never need to use <code>--publish-speaker-notes</code>:</p>
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<pre><code class="language-yaml">speaker_notes:
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always_publish: true
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</code></pre>
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<h3 id="internals"><a class="header" href="#internals">Internals</a></h3>
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<p>This uses UDP sockets on localhost to communicate between instances. The main instance sends events every time a slide
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is shown and the listener instances listen to them and displays the speaker notes for that specific slide.</p>
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