how to browse the internet.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<thisdocument>
  <process userobjective="turn on the computer">
    <!-- https://www.quora.com/How-does-a-power-button-work-in-a-computer -->
    <!-- https://wiki.osdev.org/System_Initialization_(x86) -->
    <!-- https://wiki.osdev.org/System_Initialization_(x86) -->
    <task entity="user" action="push power button">
      <task entity="power button" action="electrical current running through wire is interrupted"></task>
      <task entity="electrical wire" action="current goes to zero for short duration"></task>
      <task entity="mother board" action="?"></task>
      <task entity="CPU" action="starts by executing whatever code is found at the bottom of its memory map, which is bios code.">
        <task entity="CPU" action="executes instructions from ROM which contains a BIOS initialization program"></task>
      </task>
      <task entity="BIOS" action="sets up a bootloader">
        <task entity="BIOS" action="RAM dection"></task>
        <task entity="BIOS" action="Hardware detection/initialization"></task>
        <task entity="BIOS" action="Boot sequence"></task>
      </task>
      <task entity="BIOS" action="hands control to the OS">
        <task entity="BIOS" action="boots some devices directly into your OS-specific bootloader"></task>
        <task entity="BIOS" action="boots other devices (any hard disk, or anything emulating a hard disk) into an MBR"></task>
      </task>
    </task>
    <task entity="OS" action="OS starts userspace"></task>
  </process>
  <process userobjective="browse the web">
    <!-- https://medium.com/@maneesha.wijesinghe1/what-happens-when-you-type-an-url-in-the-browser-and-press-enter-bb0aa2449c1a -->
    <!-- https://vanseodesign.com/web-design/browser-requests/
         probably based on the medium post, but adds insight on the browser rendering stage  -->
    <!-- https://varvy.com/pagespeed/display.html
         keywords: request, response, build, render
         details on layout/reflow and paint process -->
    <!-- https://en.wikipedia.org/wiki/OSI_model -->
    <!-- https://unix.stackexchange.com/a/418323/431711 -->
    <task entity="user"
          action="open web browser">
      <task entity="user"
            action="use mouse to move pointer on desktop icon for browser">
        <task entity="mouse hardware"
              action="mouse moves across a surface"></task>
        <task entity="mouse hardware"
              action="light sensor detects movement"></task>
        <task entity="mouse hardware"
              action="signal is sent across USB cable"></task>
          <task entity="mouse hardware"
                action="data is sent using a protocol">
            <task entity="mouse hardware"
                  action="electrical signals are sent across USB cable">
            </task>
          </task>
        <task entity="computer"
              action="operating system translates USB signal to pointer on screen"></task>
      </task>
      <task entity="user"
            action="use mouse to click on desktop icon for browser">
      </task>
    </task>
    <task entity="user"
          action="enter URL of desired website">
      <task entity="user"
            action="use keyboard to type URL">
      </task>
      <task entity="user"
            action="hit 'enter' when URL is complete">
      </task>
    </task>
    <task entity="web browser"
          action="shows webpage">
      <task entity="web browser"
            action="separate path from domain name from protocol">
      </task>
      <task entity="web browser"
            action="browser checks the cache for a DNS record to find the corresponding IP address of URL">
        <context>
          DNS(Domain Name System) is a database that maintains the name of the
          website (URL) and the particular IP address it links to.
        </context>
        <task entity="web browser"
              action="check browser's in-memory cache">
          <context>
            The browser maintains a repository of DNS records for a fixed duration for websites you have previously visited.
          </context>
        </task>
        <task entity="web browser"
              action="check operating system's cache">
          <task entity="web browser"
                action="make a system call">
            <example>
              system call <command>gethostname</command> on Windows
            </example>
            <task entity="operating System"
                  action="check local cache">
            </task>
            <task entity="operating System"
                  action="check the router cache">
              <task entity="web browser"
                    action="send request to router">
                <task entity="web browser"
                      action="system call">
                  <!-- https://unix.stackexchange.com/a/418323/431711 -->
                  <task entity="operating System"
                        action="kernel implements TCP connection" osilayer="4 = transport">
                    <task entity="?" action="send SYN packet to router">
                    </task>
                    <task entity="router" action="send SYN-ACK packet to computer">
                    </task>
                    <task entity="router" action="send ACK packet to computer">
                    </task>
                    <task entity="?" action="IP packet" osilayer="3 = network layer">
                      <context>
                        Every single URL on the internet has a unique IP address assigned to it.
                      </context>
                      <context>
                        The IP address belongs to the computer which hosts the server of the website we are requesting to access.
                        <example>
                          www.google.com has an IP address of 209.85.227.104
                        </example>
                      </context>
                      <task entity="NIC driver"
                            action="send request">
                        <task entity="NIC firmware"
                              action="send signal (using Ethernet?)">
                          <task entity="NIC hardware" osilayer="1 = physical"
                                action="send electrical signal to router">
                          </task>
                        </task>
                      </task>
                    </task>
                  </task>
                </task>
              </task>
            </task>
          </task>
        </task>

        <task entity="web browser"
              action="check the ISP cache">
          <task entity="ISP DNS server"
                action="initiates a DNS query to find the IP address of the server that hosts the URL">
            <task entity="ISP DNS server"
                  action="contact the root name server">
              <task entity="root name server"
                    action="redirect ISP DNS server to TLD server">
              </task>
            </task>
          </task>
        </task>
      </task>
      <task entity="web browser"
            action="initiates a TCP connection with the server">
      </task>
      <task entity="web browser"
            action="sends an HTTP request to the server">
      </task>
      <task entity="server"
            action="handles the request">
      </task>
      <task entity="server"
            action="sends back an HTTP response">
      </task>
      <task entity="web browser"
            action="renders the HTML content">
        <task entity="web browser"
              action="build the DOM tree">
        </task>
      </task>
      <task entity="web browser"
            action="sends additional requests for objects embedded in the html file (CSS files, images, javascript, etc.)">
      </task>
      <task entity="server"
            action="sends back additional content">
      </task>
      <task entity="web browser"
            action="Process CSS markup and build the CSSOM tree.">
      </task>
      <task entity="web browser"
            action="Combine the DOM and CSSOM into a render tree.">
      </task>
      <task entity="web browser"
            action="Run the layout on the render tree to compute
                    the geometry of each node. (layout/reflow)">
        <task entity="web browser"
              action="determine size of screen">
        </task>
      </task>
      <task entity="web browser"
            action="Paint the individual nodes to the screen.">
        <task entity="web browser"
              action="convert each node in the render tree to
                      actual pixels on the screen.">
        </task>
      </task>
    </task>
    <task entity="user"
          action="read webpage">
      <task entity="user"
            action="scroll webpage">
        <option>
          <task entity="user" action="use keyboard to move webcontent down in browser">
            <task entity="user" action="press arrow key">
            </task>
          </task>
        </option>
        <option>
          <task entity="user" action="use mouse to move page down in browser">
            <task entity="user" action="move mouse pointer to scroll bar">
              <task entity="mouse hardware" action="mouse moves">
              </task>
            </task>
          </task>
        </option>
        <option>
          <task entity="user" action="use webwheel to move page down in browser">
            <task entity="user" action="rotate webwheel">
              <task entity="mouse hardware" action="web wheel moves">
              </task>
            </task>
          </task>
        </option>
      </task>
    </task>
    <task entity="user"
          action="click on relative link">
      <task entity="user"
            action="use mouse to move pointer on hyperlink in browser">
      </task>
      <task entity="user"
            action="use mouse to click on hyperlinked text browser">
      </task>
    </task>
    <task entity="user"
          action="click on absolute link">
      <task entity="user"
            action="use mouse to move pointer on hyperlink in browser">
      </task>
      <task entity="user"
            action="use mouse to click on hyperlinked text browser">
      </task>
    </task>
    <task entity="user"
          action="close browser">
      <option>
        <task entity="user"
              action="use mouse to move pointer to 'close' icon for browser">
        </task>
        <task entity="user"
              action="use mouse to click on 'close' icon for browser">
        </task>
      </option>
      <option>
        <task entity="user"
              action="terminate browser app using keyboard">
          <task entity="user"
                action="alt-F4 on keyboard">
          </task>
        </task>
      </option>
    </task>
  </process>
  <process userobjective="turn off the computer">
    <task entity="user" action="push power button"></task>
  </process>
</thisdocument>