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docs/en/document/level-0/ch05-webpage.md

@@ -95,9 +95,16 @@ Now for the second question:
 
    ```html
    <html lang="">
+     <!-- Text between angle brackets is an HTML tag and is not displayed.
+           Most tags, such as the HTML and /HTML tags that surround the contents of
+           a page, come in pairs; some tags, like HR, for a horizontal rule, stand
+           alone. Comments, such as the text you're reading, are not displayed when
+           the Web page is shown. The information between the HEAD and /HEAD tags is
+           not displayed. The information between the BODY and /BODY tags is displayed.-->
      <head>
        <title>Enter a title, displayed at the top of the window.</title>
      </head>
+     <!-- The information between the BODY and /BODY tags is displayed.-->
      <body>
        <h1>Enter the main heading, usually the same as the title.</h1>
        <p>
@@ -110,21 +117,21 @@ Now for the second question:
        <p>Improve your image by including an image.</p>
        <p>
          <img
-           src="[https://i.imgur.com/SEBww.jpg](https://i.imgur.com/SEBww.jpg)"
+           src="https://i.imgur.com/SEBww.jpg"
            alt="A Great HTML Resource"
          />
        </p>
        <p>
          Add a link to your favorite
-         <a href="[https://www.dummies.com/](https://www.dummies.com/)"
-           >Web site</a
-         >. Break up your page with a horizontal rule or two.
+         <a href="https://www.dummies.com/">Web site</a>. Break up your
+         page with a horizontal rule or two.
        </p>
        <hr />
        <p>
          Finally, link to <a href="page2.html">another page</a> in your own
          Web site.
        </p>
+       <!-- And add a copyright notice.-->
        <p>&#169; Wiley Publishing, 2011</p>
      </body>
    </html>

docs/en/document/level-0/ch06-certificates.md

@@ -86,7 +86,26 @@ Before officially applying for a certificate, let's use a test command (`--issue
    sxlYqPvWreKgD5b8JyOQX0Yg2MLoRUoDyqVkd31PthIiwzdckoh5eD3JU7ysYBtN
    cTFK4LGOfjqi8Ks87EVJdK9IaSAu7ZC6h5to0eqpJ5PLhaM3e6yJBbHmYA8w1Smp
    wAb3tdoHZ9ttUIm9CrSzvDBt6BBT6GqYdDamMyCYBLooMyDEM4CUFsOzCRrEqqvC
-   ... (omitted for brevity) ...
+   2mTTEmhvpojo5rhdTSJxibozyNWTGwoTj0v9pTUeQcGqLIzqi4DowjBHD5guwRid
+   SjAFnm6JT2xUQgWFm58A1gv1OhbH1TRPUUmtE1nFEN7YiSjI4xgxqAXT3CLD2EUb
+   wXlUrO6c75zSsQP4bRMzgOjJUqHtSb6IEqELzt4M7KzL5iCOruCChCo2DZxUwvVX
+   tOoaAyQJzCbTqE6aUqwiKi3gVyoxvDP9mI5JdRYzsDL6GVud7EHPnYeMl9ubLZAK
+   0vg84mbMP3f6mYM4KRa1cqiyOIcQPT4AzGFYVv4sm049bZQg7sd0Bz9CaFvE7yDA
+   1y17XlgCDnsjxl66bqI1vkENN9XT5xeFHONqc18b5fZEKSIvdX7iWPFWp1PyMPpG
+   0pMCP1EymZNFxIMJLgbWqExwLWfPc5Ib3PjBaIqhXPnw6sT2MQSxXwDupq1UJVhV
+   7E3hQRVlwI4CXi6WLHJMNvNRyyK87gCrLH1bKYsPeRVaz77poWBq49zwBCts6hPY
+   IeF4ltGXyANNIOPEi8vy138fRU4LYh81d8FjOtFfJZogMjwhfNvapqxPMsioPlmX
+   TnZu0n7setrVNUEfTMHWqPpDgk5MPrWLA4LapqaDfEX4pwnQJLMwMi6s94z165c0
+   iMRSKA1yU5zqv8aNsDfPoY4OkSPWs4MaXgRRSLBsUfZ15DwQXPk76kegHIyxWvwF
+   tYw9HKR5QCMK66fa0z4aJoFVFLK0IIOGEZOanRFUCnkLUDd3QZ3YU8lEcrj7Uxos
+   haiRNICyC6UfsCJ94a8vcNyMosPv3xBLMp19WXgiFYqEFQkntkv1FLRI35fjeJmg
+   0fmD9VG9bkzGPHihJgQLRlCHasGf6XrdfkSsODAyCUHUHJ0RzqF4YEZMcxDxzuQ2
+   YO7bFwj7S3mUdVPZ6MPasjxdyBjJgEBMch2uy4AhmudXfEBQBye8W6ZI4ztZjLVV
+   FmP4SIuaNUmMe20TjR8b9NVC96AhxOanWT3mRROsdokpKQGTJvl27EHH8KuAbUOc
+   G6KtPy4wslNZNXWcBy9n63RcWak12r7kAIFn38tZxmlw2WUKoRSMAH64GcDTjRQd
+   Am65hBHzvGrj93wEuVNIebvNIsJOlng3HFjpIxVqKGMCIfWIKGDE3YzK3p4LbGZ6
+   NZFQWYJLNVf2M9CCJfbEImPYgvctrxl39H6KVYPCw1SAdaj9NneUqmREOQkKoEB0
+   x6PmNirbMscHhQPSC0JQaqUgaQFgba1ALmzRYAnYhNb0twkTxWbY7DBkAarxqMIp
    yiLKcBFc5H7dgJCImo7us7aJeftC44uWkPIjw9AKH=
    --END CERTIFICAT--
    [Wed 30 Dec 2022 15:21:52 AM EST] Your cert is in  /home/vpsadmin/.acme.sh/subdomain.yourdomain.com_ecc/subdomain.yourdomain.com.cer
@@ -145,7 +164,27 @@ Before officially applying for a certificate, let's use a test command (`--issue
    --BEGIN CERTIFICAT--
    sxlYqPvWreKgD5b8JyOQX0Yg2MLoRUoDyqVkd31PthIiwzdckoh5eD3JU7ysYBtN
    cTFK4LGOfjqi8Ks87EVJdK9IaSAu7ZC6h5to0eqpJ5PLhaM3e6yJBbHmYA8w1Smp
-   ... (omitted for brevity) ...
+   wAb3tdoHZ9ttUIm9CrSzvDBt6BBT6GqYdDamMyCYBLooMyDEM4CUFsOzCRrEqqvC
+   2mTTEmhvpojo5rhdTSJxibozyNWTGwoTj0v9pTUeQcGqLIzqi4DowjBHD5guwRid
+   SjAFnm6JT2xUQgWFm58A1gv1OhbH1TRPUUmtE1nFEN7YiSjI4xgxqAXT3CLD2EUb
+   wXlUrO6c75zSsQP4bRMzgOjJUqHtSb6IEqELzt4M7KzL5iCOruCChCo2DZxUwvVX
+   tOoaAyQJzCbTqE6aUqwiKi3gVyoxvDP9mI5JdRYzsDL6GVud7EHPnYeMl9ubLZAK
+   0vg84mbMP3f6mYM4KRa1cqiyOIcQPT4AzGFYVv4sm049bZQg7sd0Bz9CaFvE7yDA
+   1y17XlgCDnsjxl66bqI1vkENN9XT5xeFHONqc18b5fZEKSIvdX7iWPFWp1PyMPpG
+   0pMCP1EymZNFxIMJLgbWqExwLWfPc5Ib3PjBaIqhXPnw6sT2MQSxXwDupq1UJVhV
+   7E3hQRVlwI4CXi6WLHJMNvNRyyK87gCrLH1bKYsPeRVaz77poWBq49zwBCts6hPY
+   IeF4ltGXyANNIOPEi8vy138fRU4LYh81d8FjOtFfJZogMjwhfNvapqxPMsioPlmX
+   TnZu0n7setrVNUEfTMHWqPpDgk5MPrWLA4LapqaDfEX4pwnQJLMwMi6s94z165c0
+   iMRSKA1yU5zqv8aNsDfPoY4OkSPWs4MaXgRRSLBsUfZ15DwQXPk76kegHIyxWvwF
+   tYw9HKR5QCMK66fa0z4aJoFVFLK0IIOGEZOanRFUCnkLUDd3QZ3YU8lEcrj7Uxos
+   haiRNICyC6UfsCJ94a8vcNyMosPv3xBLMp19WXgiFYqEFQkntkv1FLRI35fjeJmg
+   0fmD9VG9bkzGPHihJgQLRlCHasGf6XrdfkSsODAyCUHUHJ0RzqF4YEZMcxDxzuQ2
+   YO7bFwj7S3mUdVPZ6MPasjxdyBjJgEBMch2uy4AhmudXfEBQBye8W6ZI4ztZjLVV
+   FmP4SIuaNUmMe20TjR8b9NVC96AhxOanWT3mRROsdokpKQGTJvl27EHH8KuAbUOc
+   G6KtPy4wslNZNXWcBy9n63RcWak12r7kAIFn38tZxmlw2WUKoRSMAH64GcDTjRQd
+   Am65hBHzvGrj93wEuVNIebvNIsJOlng3HFjpIxVqKGMCIfWIKGDE3YzK3p4LbGZ6
+   NZFQWYJLNVf2M9CCJfbEImPYgvctrxl39H6KVYPCw1SAdaj9NneUqmREOQkKoEB0
+   x6PmNirbMscHhQPSC0JQaqUgaQFgba1ALmzRYAnYhNb0twkTxWbY7DBkAarxqMIp
    yiLKcBFc5H7dgJCImo7us7aJeftC44uWkPM=
    --END CERTIFICAT--
    [Wed 30 Dec 2022 15:22:52 AM EST] Your cert is in  /home/vpsadmin/.acme.sh/subdomain.yourdomain.com_ecc/subdomain.yourdomain.com.cer

docs/en/document/level-0/ch07-xray-server.md

@@ -348,10 +348,10 @@ So far, we have used `systemctl` related commands like `start`, `status`, `reloa
     net.ipv4.tcp_congestion_control=bbr
     ```
 
-9.  Reboot the VPS to make the `BBR` settings take effect.
+9.  Read the configuration to make the `BBR` settings take effect.
 
     ```shell
-    sudo reboot
+    sudo sysctl --system
     ```
 
 10. Confirm `BBR` is enabled