CON-2948 Markdown DPXAI: Quest00-Ex01

.gitignore

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 node_modules
 rust/**/target/
 js/soluss
+**/.DS_Store

subjects/DPxAI/call_it/README.md

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+## Call it
+
+> Brainpower mode
+
+### Context
+
+Congrats! You created the very first base for your entity and you witnessed its appearance in the Digital
+World - your browser.. However, it is still a tiny seed of the marvelous thing it could become. Be patient;
+there's still a bit of work to do.
+
+### Directions
+
+First of all, instead of writing down what things are _(you're not writing down on your hand the word 'hand',
+are you?)_, we're going to identify them semantically with the very practical [id
+attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attri butes/id). This `id` has to be a **unique**
+identifier on your webpage, allowing you to target your element when needed. You can compare it to your name and
+surname; this is what identifies you to other people, and if someone's calling you by your name, you answer.
+
+### Instructions
+
+So let's identify the 3 elements we have so far: in each section, remove the text content from inside the tag
+and set it as the value of the `id` attribute of the corresponding `section` text.
+
+**Run your code in the editor preview:** \
+you don't see _anything_? Don't freak out! \
+Inspect the HTML that has been created with your
+[browser inspector tool](https://developer.mozilla.org/en-US/docs/Learn/Common_questions/What_are_browser_developer_tools),
+and if you done it correctly, you should see the 3 sections inside the `body` with the `id` attribute set in
+your HTML structure.
+
+### Code examples
+
+To set the `id` of a `div` tag to `"my-lil-div"`:
+
+```html
+<div id="my-lil-div"></div>
+```
+
+### Notions
+
+- [`id` attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/id)