Update README.md

20.test/README.md

+---
+published: false
+routable: false
+visible: false
+---
+
 A test page to visually inspect the various markdown features.
 
 We'll perhaps use this as living documentation.
+
+---
+published:false
+routable: false
+visible: false
+---
+
+
+---
+markdown-underline:
+    '*': b
+---
+
+! THIS IS A TEST PAGE.  JUST IGNORE IT.
+
+# Let's test the features!
+
+0. `*`: *star*
+1. `**`: **globstar**
+2. `_`: _underscore_
+3. `__`: __underscores__
+4. `~~`: ~~double tilde~~
+
+
+_**__salient__**_
+
+____
+
+#### Definition list
+
+<!-- definition lists -->
+
+celerity $c$
+: Speed of light in a vacuum.
+
+circle constant $\tau$
+: Circumference of the unit circle.
+  
+  With multiline things and goodies like some *bold text*.
+  
+  Gumbo beet greens corn soko endive gumbo gourd.
+  Parsley shallot courgette tatsoi pea sprouts fava bean collard greens
+  dandelion okra wakame tomato. Dandelion cucumber earthnut pea peanut soko zucchini. 
+  
+
+<!-- Expandable sections -->
+
+<details markdown=1>
+
+<summary>
+    VOIR LA SOLUTION
+</summary>
+
+```math
+f\colon\left\{\begin{aligned}\mathbb{R}_4[X]&\longrightarrow\mathbb{R}_4[X] \\
+P&\longmapsto P’\end{aligned}\right.
+\qquad
+g\colon\left\{\begin{aligned}\mathbb{R}_2[X]&\longrightarrow\mathbb{R}_2[X] \\
+P&\longmapsto XP’+P\end{aligned}\right.
+```
+
+</details>
+
+
+<!-- Trailing # are ignored and are sometimes good for readability -->
+### Flowchart ########################################################
+
+```mermaid
+graph LR
+  subgraph M3P2
+    File[File]
+    Website[Website]
+    Pipeline[Pipeline]
+  end
+
+  Teacher((Teacher))
+  Student((Student))
+
+  Student --> |reads| Website
+  Teacher --> |edits| File
+  File --> |triggers| Pipeline
+  Pipeline --> |updates| Website
+```
+
+
+
+### LateX 💾🐘🐘🐘🐘🐢
+
+```math
+f\colon\left\{\begin{aligned}\mathbb{R}_4[X]&\longrightarrow\mathbb{R}_4[X] \\P&\longmapsto P’\end{aligned}\right. \qquad g\colon\left\{\begin{aligned}\mathbb{R}_2[X]&\longrightarrow\mathbb{R}_2[X] \\ P&\longmapsto XP’+P\end{aligned}\right.
+```
+
+> The complex exponential of the circle constant is unity.
+>> $e^{i\tau}=1$
+
+
+
+### Includes
+
+`[content-inject](partials)`
+
+[content-inject](partials)
+
+
+
+<!--Geogebra animations still to be scaled full window with adapatle height-->
+
+### GeoGebra
+
+#### Iframe
+
+<!-- https://wiki.geogebra.org/en/Reference:Material_Embedding_(Iframe) -->
+<!--
+<iframe class="geogebra" src="https://www.geogebra.org/material/iframe/id/wkrw5qgm/sfsb/true" allowfullscreen width="320px" height="280px"></iframe>
+
+<iframe class="geogebra" src="https://www.geogebra.org/material/iframe/id/wkrw5qgm/sfsb/true" allowfullscreen width="auto" height="auto"></iframe>
+
+<iframe class="geogebra" src="https://www.geogebra.org/material/iframe/id/wkrw5qgm/sfsb/true" allowfullscreen width="auto"></iframe>
+
+#### ???
+See https://wiki.geogebra.org/en/Reference:GeoGebra_Apps_Embedding
+-->
+
+<!-- same, video still to be scaled full window-->
+### Videos
+
+#### Iframe
+
+<iframe width="560" height="315" sandbox="allow-same-origin allow-scripts" src="https://video.samedi.pm/videos/embed/c06dbd9e-d8c7-4655-aade-51ae95b998c3" frameborder="0" allowfullscreen></iframe>
+
+<iframe width="auto" height="auto" sandbox="allow-same-origin allow-scripts" src="https://video.samedi.pm/videos/embed/c06dbd9e-d8c7-4655-aade-51ae95b998c3" frameborder="0" allowfullscreen></iframe>
+
+<iframe  sandbox="allow-same-origin allow-scripts" src="https://video.samedi.pm/videos/embed/c06dbd9e-d8c7-4655-aade-51ae95b998c3" frameborder="0" allowfullscreen></iframe>
+