add usage

Author: shawroger

README.md

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+The document of echoshare, available at ilable at https://docs.echoshare.site.

docs/.vuepress/.temp/pages/get-started.html.js

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 </p>
 <p>Echoshare is an out-of-the-box and highly customizable configuration-enabled online media sharing application.</p>
 <p>Based on WebRTC technology, Echoshare provides efficient, low-latency online screen sharing that simultaneously transmits screen shots, camera video streams, microphone audio streams, and system audio to meet diverse remote collaboration needs.</p>
+<h2 id="usage-instructions" tabindex="-1"><a class="header-anchor" href="#usage-instructions"><span>Usage Instructions</span></a></h2>
+<ol>
+<li>To ensure EchoShare functions correctly, please verify that your browser supports WebRTC technology. Upon initial use, the system will request permission to access your camera and microphone. Denying these permissions may result in limited functionality. You can review or modify these permissions in your browser's website settings.</li>
+</ol>
+<p><img src="https://i.postimg.cc/5tjjsgYN/image.png" alt="web permissions"></p>
+<ol start="2">
+<li>Due to mobile browser limitations, when using EchoShare on a mobile phone or tablet, you can only share your camera and microphone; screen sharing is not currently available. However, media reception is unaffected. Therefore, you can use EchoShare to transmit audio from a computer to a mobile device for playback, even if the computer itself lacks audio output capabilities.</li>
+</ol>
 <h2 id="functional-features" tabindex="-1"><a class="header-anchor" href="#functional-features"><span>Functional features</span></a></h2>
 <h3 id="core-functionality" tabindex="-1"><a class="header-anchor" href="#core-functionality"><span>Core functionality</span></a></h3>
 <ul>

docs/.vuepress/.temp/pages/get-started.html.vue

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 </p>
 <p>Echoshare 是一款开箱即用且支持高度自定义配置的在线媒体共享应用。</p>
 <p>基于 WebRTC 技术，Echoshare 提供高效、低延迟的在线屏幕共享功能，可同时传输屏幕画面、摄像头视频流、麦克风音频流以及系统音频，全面满足多样化的远程协作需求。</p>
+<h2 id="使用须知" tabindex="-1"><a class="header-anchor" href="#使用须知"><span>使用须知</span></a></h2>
+<ol>
+<li>为了确保 EchoShare 的正常运行，请确认您的浏览器支持 WebRTC 技术。首次使用时，系统将请求您授予摄像头和麦克风权限。若您拒绝授权，可能导致功能受限。您可以在浏览器的网页权限设置中查看或修改这些权限。</li>
+</ol>
+<p><img src="https://i.postimg.cc/5tjjsgYN/image.png" alt="网页权限"></p>
+<ol start="2">
+<li>由于移动端浏览器限制，使用 EchoShare 时，您在手机或平板电脑上仅能共享摄像头和麦克风，屏幕共享功能暂不可用。但接收媒体不受影响。因此，您可以利用 EchoShare 将电脑端的音频传输至移动设备播放，即使电脑本身没有音频输出设备。</li>
+</ol>
 <h2 id="功能特点" tabindex="-1"><a class="header-anchor" href="#功能特点"><span>功能特点</span></a></h2>
 <h3 id="核心功能" tabindex="-1"><a class="header-anchor" href="#核心功能"><span>核心功能</span></a></h3>
 <ul>