diff --git a/doc/Makefile b/doc/Makefile
index 84549d4..b180739 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -16,8 +16,8 @@ help:
 .PHONY: help Makefile
 
 diagrams:
-	@$(MAKE) -C "$(SOURCEDIR)"/diagram_source clean
-	@$(MAKE) -C "$(SOURCEDIR)"/diagram_source
+	@$(MAKE) -C "$(SOURCEDIR)"/diagrams_source clean
+	@$(MAKE) -C "$(SOURCEDIR)"/diagrams_source
 
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
diff --git a/doc/common/extensions/requirements-static.py b/doc/common/extensions/requirements-static.py
index 046f9a5..755e0d4 100644
--- a/doc/common/extensions/requirements-static.py
+++ b/doc/common/extensions/requirements-static.py
@@ -47,20 +47,19 @@ class PybricksRequirementsStaticDirective(Directive):
             makedirs(destdir)
 
         for hub in HUB_FEATURES:
-            for compat in ("true", "false"):
-                uri = "compat_{0}_{1}.png".format(hub, compat)
-                src_uri = path.join(env.app.builder.srcdir, "diagrams", uri)
-                build_uri = path.join(env.app.builder.outdir, "_images", uri)
-                copyfile(src_uri, build_uri)
+            uri = "compat_{0}.png".format(hub)
+            src_uri = path.join(env.app.builder.srcdir, "diagrams", uri)
+            build_uri = path.join(env.app.builder.outdir, "_images", uri)
+            copyfile(src_uri, build_uri)
 
         # Get requirements from sphinx-directive.
         requirements = set(self.arguments)
 
         # Cell with image of a hub.
         hub_cell = """
-        <th><div class="align-default">
-        <img alt="" src="{0}_images/compat_{1}_{2}.png">
-        </div></th>
+        <th background="{0}_images/compat_{1}.png" class="requirements-table-th requirements-table-th">
+        {2}
+        </th>
         """
 
         # Determine how far up the tree we are to set correct image path.
@@ -72,7 +71,7 @@ class PybricksRequirementsStaticDirective(Directive):
         compat_row = "".join(
             [
                 hub_cell.format(
-                    depth_path, hub, "true" if requirements <= features else "false"
+                    depth_path, hub, "✅" if requirements <= features else "❌"
                 )
                 for hub, features in HUB_FEATURES.items()
             ]
@@ -81,7 +80,7 @@ class PybricksRequirementsStaticDirective(Directive):
         # Generate full table.
         html = """
         <div class="wy-table-responsive">
-            <table class="docutils align-default">
+            <table class="docutils align-default requirements-table">
                 <tbody>
                     <tr>
                         {0}
diff --git a/doc/common/extensions/requirements.css b/doc/common/extensions/requirements.css
index e295b4f..0ee70d2 100644
--- a/doc/common/extensions/requirements.css
+++ b/doc/common/extensions/requirements.css
@@ -42,3 +42,19 @@ SOFTWARE. */
     margin-bottom: 0px;
 }
 
+.requirements-table {
+    width: 100%;
+}
+
+.requirements-table-th {
+    background-size:contain;
+    background-repeat: no-repeat;
+    text-align: right;
+    padding: 6px !important;
+  }
+
+.requirements-table-th:after {
+    content: '';
+    display: block;
+    margin-top: 80%;
+  }
diff --git a/doc/main/diagrams/compat_cityhub.png b/doc/main/diagrams/compat_cityhub.png
new file mode 100644
index 0000000..e92655f
Binary files /dev/null and b/doc/main/diagrams/compat_cityhub.png differ
diff --git a/doc/main/diagrams/compat_cityhub_false.png b/doc/main/diagrams/compat_cityhub_false.png
deleted file mode 100644
index 5a467b0..0000000
Binary files a/doc/main/diagrams/compat_cityhub_false.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_cityhub_true.png b/doc/main/diagrams/compat_cityhub_true.png
deleted file mode 100644
index d05e8bf..0000000
Binary files a/doc/main/diagrams/compat_cityhub_true.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_essentialhub.png b/doc/main/diagrams/compat_essentialhub.png
new file mode 100644
index 0000000..ddf9a4a
Binary files /dev/null and b/doc/main/diagrams/compat_essentialhub.png differ
diff --git a/doc/main/diagrams/compat_essentialhub_false.png b/doc/main/diagrams/compat_essentialhub_false.png
deleted file mode 100644
index 6909f5d..0000000
Binary files a/doc/main/diagrams/compat_essentialhub_false.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_essentialhub_true.png b/doc/main/diagrams/compat_essentialhub_true.png
deleted file mode 100644
index 3d07239..0000000
Binary files a/doc/main/diagrams/compat_essentialhub_true.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_inventorhub.png b/doc/main/diagrams/compat_inventorhub.png
new file mode 100644
index 0000000..832870f
Binary files /dev/null and b/doc/main/diagrams/compat_inventorhub.png differ
diff --git a/doc/main/diagrams/compat_inventorhub_false.png b/doc/main/diagrams/compat_inventorhub_false.png
deleted file mode 100644
index 0fb2597..0000000
Binary files a/doc/main/diagrams/compat_inventorhub_false.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_inventorhub_true.png b/doc/main/diagrams/compat_inventorhub_true.png
deleted file mode 100644
index bbc268d..0000000
Binary files a/doc/main/diagrams/compat_inventorhub_true.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_movehub.png b/doc/main/diagrams/compat_movehub.png
new file mode 100644
index 0000000..109e5ed
Binary files /dev/null and b/doc/main/diagrams/compat_movehub.png differ
diff --git a/doc/main/diagrams/compat_movehub_false.png b/doc/main/diagrams/compat_movehub_false.png
deleted file mode 100644
index 9944939..0000000
Binary files a/doc/main/diagrams/compat_movehub_false.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_movehub_true.png b/doc/main/diagrams/compat_movehub_true.png
deleted file mode 100644
index e7b61e3..0000000
Binary files a/doc/main/diagrams/compat_movehub_true.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_primehub.png b/doc/main/diagrams/compat_primehub.png
new file mode 100644
index 0000000..5a1a304
Binary files /dev/null and b/doc/main/diagrams/compat_primehub.png differ
diff --git a/doc/main/diagrams/compat_primehub_false.png b/doc/main/diagrams/compat_primehub_false.png
deleted file mode 100644
index 7d20646..0000000
Binary files a/doc/main/diagrams/compat_primehub_false.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_primehub_true.png b/doc/main/diagrams/compat_primehub_true.png
deleted file mode 100644
index 0f1b71c..0000000
Binary files a/doc/main/diagrams/compat_primehub_true.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_technichub.png b/doc/main/diagrams/compat_technichub.png
new file mode 100644
index 0000000..9bd8e7a
Binary files /dev/null and b/doc/main/diagrams/compat_technichub.png differ
diff --git a/doc/main/diagrams/compat_technichub_false.png b/doc/main/diagrams/compat_technichub_false.png
deleted file mode 100644
index b57b149..0000000
Binary files a/doc/main/diagrams/compat_technichub_false.png and /dev/null differ
diff --git a/doc/main/diagrams/compat_technichub_true.png b/doc/main/diagrams/compat_technichub_true.png
deleted file mode 100644
index 8df19e8..0000000
Binary files a/doc/main/diagrams/compat_technichub_true.png and /dev/null differ
diff --git a/doc/main/diagrams_source/compat_cityhub_true.svg b/doc/main/diagrams_source/compat_cityhub.svg
similarity index 82%
rename from doc/main/diagrams_source/compat_cityhub_true.svg
rename to doc/main/diagrams_source/compat_cityhub.svg
index 38c6927..1a3a099 100644
--- a/doc/main/diagrams_source/compat_cityhub_true.svg
+++ b/doc/main/diagrams_source/compat_cityhub.svg
@@ -8,7 +8,7 @@
    version="1.1"
    id="svg887"
    inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
-   sodipodi:docname="compat_cityhub_true.svg"
+   sodipodi:docname="compat_cityhub.svg"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns:xlink="http://www.w3.org/1999/xlink"
@@ -40,15 +40,15 @@
      inkscape:pageshadow="2"
      inkscape:zoom="3.3219805"
      inkscape:cx="34.617903"
-     inkscape:cy="95.726028"
+     inkscape:cy="95.575516"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
      showgrid="false"
      units="px"
-     inkscape:window-width="1920"
-     inkscape:window-height="1163"
-     inkscape:window-x="1920"
-     inkscape:window-y="0"
+     inkscape:window-width="1856"
+     inkscape:window-height="1136"
+     inkscape:window-x="64"
+     inkscape:window-y="27"
      inkscape:window-maximized="1"
      inkscape:snap-global="false"
      inkscape:pagecheckerboard="0" />
@@ -75,10 +75,5 @@
        y="265.09711"
        width="23.382999"
        height="26.799999" />
-    <path
-       style="fill:none;stroke:#84ba4c;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-       d="m 31.147057,265.82725 1.011052,2.9815 3.622948,-4.60003"
-       id="path854"
-       inkscape:connector-curvature="0" />
   </g>
 </svg>
diff --git a/doc/main/diagrams_source/compat_cityhub_false.svg b/doc/main/diagrams_source/compat_cityhub_false.svg
deleted file mode 100644
index 878d7e0..0000000
--- a/doc/main/diagrams_source/compat_cityhub_false.svg
+++ /dev/null
@@ -1,94 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   width="150"
-   height="135"
-   viewBox="0 0 39.687499 35.718751"
-   version="1.1"
-   id="svg887"
-   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
-   sodipodi:docname="compat_cityhub_false.svg"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:xlink="http://www.w3.org/1999/xlink"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:dc="http://purl.org/dc/elements/1.1/">
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-     id="defs881">
-    <clipPath
-       clipPathUnits="userSpaceOnUse"
-       id="clipPath1545">
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-         x="-25.390602"
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-  </defs>
-  <sodipodi:namedview
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-     pagecolor="#fcfcfc"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="1"
-     inkscape:pageshadow="2"
-     inkscape:zoom="3.0825819"
-     inkscape:cx="78.505619"
-     inkscape:cy="101.70046"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     units="px"
-     inkscape:window-width="1856"
-     inkscape:window-height="1136"
-     inkscape:window-x="64"
-     inkscape:window-y="27"
-     inkscape:window-maximized="1"
-     inkscape:snap-global="false"
-     inkscape:pagecheckerboard="0" />
-  <metadata
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-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
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-  <g
-     inkscape:label="Layer 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-261.28123)">
-    <image
-       xlink:href="../cad/output/hub-city.png"
-       id="image1470"
-       x="8.0035677"
-       y="265.09711"
-       width="23.382999"
-       height="26.799999" />
-    <g
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-  </g>
-</svg>
diff --git a/doc/main/diagrams_source/compat_essentialhub_true.svg b/doc/main/diagrams_source/compat_essentialhub.svg
similarity index 83%
rename from doc/main/diagrams_source/compat_essentialhub_true.svg
rename to doc/main/diagrams_source/compat_essentialhub.svg
index 822791b..ce8bc28 100644
--- a/doc/main/diagrams_source/compat_essentialhub_true.svg
+++ b/doc/main/diagrams_source/compat_essentialhub.svg
@@ -8,7 +8,7 @@
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    id="svg887"
    inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
-   sodipodi:docname="compat_essentialhub_true.svg"
+   sodipodi:docname="compat_essentialhub.svg"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns:xlink="http://www.w3.org/1999/xlink"
@@ -38,9 +38,9 @@
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      inkscape:pageopacity="1"
      inkscape:pageshadow="2"
-     inkscape:zoom="2.3960249"
-     inkscape:cx="-130.63303"
-     inkscape:cy="93.696856"
+     inkscape:zoom="3.4759103"
+     inkscape:cx="134.0656"
+     inkscape:cy="60.84737"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
      showgrid="false"
@@ -75,10 +75,5 @@
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        width="25.393"
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-       inkscape:connector-curvature="0" />
   </g>
 </svg>
diff --git a/doc/main/diagrams_source/compat_essentialhub_false.svg b/doc/main/diagrams_source/compat_essentialhub_false.svg
deleted file mode 100644
index a51db0d..0000000
--- a/doc/main/diagrams_source/compat_essentialhub_false.svg
+++ /dev/null
@@ -1,94 +0,0 @@
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-<!-- Created with Inkscape (http://www.inkscape.org/) -->
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-   height="135"
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-   version="1.1"
-   id="svg887"
-   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
-   sodipodi:docname="compat_essentialhub_false.svg"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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diff --git a/doc/main/diagrams_source/compat_inventorhub_true.svg b/doc/main/diagrams_source/compat_inventorhub.svg
similarity index 83%
rename from doc/main/diagrams_source/compat_inventorhub_true.svg
rename to doc/main/diagrams_source/compat_inventorhub.svg
index 34348aa..257c455 100644
--- a/doc/main/diagrams_source/compat_inventorhub_true.svg
+++ b/doc/main/diagrams_source/compat_inventorhub.svg
@@ -8,7 +8,7 @@
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+   sodipodi:docname="compat_inventorhub.svg"
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    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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@@ -38,9 +38,9 @@
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+     inkscape:zoom="2.6570037"
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diff --git a/doc/main/diagrams_source/compat_inventorhub_false.svg b/doc/main/diagrams_source/compat_inventorhub_false.svg
deleted file mode 100644
index 721f7c5..0000000
--- a/doc/main/diagrams_source/compat_inventorhub_false.svg
+++ /dev/null
@@ -1,94 +0,0 @@
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