Documentation about XML output of command `INFO 1-10`

General
1

I want to know where to find the docuemntation about the XML returned from the command INFO 1-10:

<?xml version="1.0" encoding="utf-8"?>
<channel>
   <format>1080p5000</format>
   <framerate>50</framerate>
   <framerate>1</framerate>
   <mixer>
      <audio>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
      </audio>
   </mixer>
   <output>
      <port>
         <port_500>
            <consumer>system-audio</consumer>
         </port_500>
         <port_600>
            <consumer>screen</consumer>
            <screen>
               <always_on_top>false</always_on_top>
               <index>0</index>
               <key_only>false</key_only>
               <name>Screen consumer</name>
            </screen>
         </port_600>
      </port>
   </output>
   <stage>
      <layer>
         <layer_10>
            <background>
               <producer>empty</producer>
            </background>
            <foreground>
               <file>
                  <clip>0</clip>
                  <clip>6526.5600000000004</clip>
                  <name>Z:/xxx/foo</name>
                  <path>Z:/xxx/foo.mkv</path>
                  <streams>
                     <file>
                        <streams_0>
                           <fps>24000</fps>
                           <fps>1001</fps>
                        </streams_0>
                        <streams_1>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_1>
                        <streams_2>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_2>
                        <streams_3>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_3>
                        <streams_4>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_4>
                        <streams_5>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_5>
                        <streams_6>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_6>
                     </file>
                  </streams>
                  <time>852.48000000000002</time>
                  <time>6526.5600000000004</time>
               </file>
               <loop>false</loop>
               <paused>false</paused>
               <producer>ffmpeg</producer>
            </foreground>
         </layer_10>
         <layer_20>
            <background>
               <producer>empty</producer>
            </background>
            <foreground>
               <file>
                  <clip>0</clip>
                  <clip>10</clip>
                  <name>splashscreen</name>
                  <path>D:\CasparCG\media\splashscreen.mp4</path>
                  <streams>
                     <file>
                        <streams_0>
                           <fps>30</fps>
                           <fps>1</fps>
                        </streams_0>
                     </file>
                  </streams>
                  <time>4.7800000000000002</time>
                  <time>10</time>
               </file>
               <loop>true</loop>
               <paused>false</paused>
               <producer>ffmpeg</producer>
            </foreground>
         </layer_20>
      </layer>
   </stage>
</channel>