Merge remote-tracking branch 'origin/staging' into develop

docs/user-guide/introduction/shortcuts.njk

@@ -429,11 +429,6 @@ title: Shortcuts
       <td style="text-align: center;"><kbd>Alt</kbd><kbd>P</kbd></td>
       <td style="text-align: center;"><kbd>⌥</kbd><kbd>P</kbd></td>
     </tr>
-    <tr>
-      <td>History</td>
-      <td style="text-align: center;"><kbd>Alt</kbd><kbd>H</kbd></td>
-      <td style="text-align: center;"><kbd>⌥</kbd><kbd>H</kbd></td>
-    </tr>
     <tr>
       <td>Layers</td>
       <td style="text-align: center;"><kbd>Alt</kbd><kbd>L</kbd></td>

docs/user-guide/styling/index.njk

@@ -155,4 +155,30 @@ title: 06· Styling
   <video title="Apply blur to a layer" muted="" playsinline="" controls="" width="100%" poster="/img/styling/blur.webp" height="auto">
     <source src="/img/styling/blur.mp4" type="video/mp4">
   </video>
-</figure>
+</figure>
+
+<h2 id="blend">Opacity and blend</h2>
+<p>Set the overal opacity for layers and their blend mode.</p> 
+<p>Blend allows you to control how a layer interacts with the layers beneath it, determining how pixels from the current layer are combined with pixels in the underlying layers. Use blend to achive various effects, such as shading, highlights, or creative visual styles.</p>
+<figure>
+  <img alt="Layer blend and opacity" src="/img/styling/blend-opacity.webp"/>
+</figure>
+<p>Blend options available:</p>
+<ul>
+  <li><strong>Normal</strong></li>
+  <li><strong>Darken</strong></li>
+  <li><strong>Multiply</strong></li>
+  <li><strong>Color burn</strong></li>
+  <li><strong>Lighten</strong></li>
+  <li><strong>Screen</strong></li>
+  <li><strong>Color dodge</strong></li>
+  <li><strong>Overlay</strong></li>
+  <li><strong>Soft light</strong></li>
+  <li><strong>Hard light</strong></li>
+  <li><strong>Difference</strong></li>
+  <li><strong>Exclusion</strong></li>
+  <li><strong>Hue</strong></li>
+  <li><strong>Saturation</strong></li>
+  <li><strong>Color</strong></li>
+  <li><strong>Luminosity</strong></li>
+</ul>