diff --git a/_r_e_a_d_m_e_8md.html b/_r_e_a_d_m_e_8md.html
index 6a96b74..f1e8a5d 100644
--- a/_r_e_a_d_m_e_8md.html
+++ b/_r_e_a_d_m_e_8md.html
@@ -96,7 +96,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/about.html b/about.html
index 2c8cbfb..b1de4b2 100644
--- a/about.html
+++ b/about.html
@@ -96,7 +96,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/about_8dox.html b/about_8dox.html
index b9ed03e..ad1dac3 100644
--- a/about_8dox.html
+++ b/about_8dox.html
@@ -96,7 +96,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/annotated.html b/annotated.html
index 5a7ab78..5705f9a 100644
--- a/annotated.html
+++ b/annotated.html
@@ -48,7 +48,7 @@
   <div class="m-container m-container-inflatable">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <h1>Classes</h2>
+        <h1>Classes</h1>
         <ul class="m-doc">
           <li class="m-doc-collapsible">
             <a href="#" onclick="return toggle(this)">namespace</a> <a href="namespacegreeter.html" class="m-doc">greeter</a> <span class="m-doc"><span></span></span>
@@ -117,7 +117,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/classgreeter_1_1_greeter.html b/classgreeter_1_1_greeter.html
index 159cd72..26c0237 100644
--- a/classgreeter_1_1_greeter.html
+++ b/classgreeter_1_1_greeter.html
@@ -170,7 +170,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/dir_138aff360eb965c43b94267b8d1ce09e.html b/dir_138aff360eb965c43b94267b8d1ce09e.html
index 7c08a14..2cf63c9 100644
--- a/dir_138aff360eb965c43b94267b8d1ce09e.html
+++ b/dir_138aff360eb965c43b94267b8d1ce09e.html
@@ -114,7 +114,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/dir_31a378c84b956866319ca9d9294f1959.html b/dir_31a378c84b956866319ca9d9294f1959.html
index 3cc2407..e7ae299 100644
--- a/dir_31a378c84b956866319ca9d9294f1959.html
+++ b/dir_31a378c84b956866319ca9d9294f1959.html
@@ -96,7 +96,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/dir_efc517448da1cf4216d09f3867bece28.html b/dir_efc517448da1cf4216d09f3867bece28.html
index 2bd456a..569e601 100644
--- a/dir_efc517448da1cf4216d09f3867bece28.html
+++ b/dir_efc517448da1cf4216d09f3867bece28.html
@@ -114,7 +114,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/files.html b/files.html
index c72c9f7..043b6ef 100644
--- a/files.html
+++ b/files.html
@@ -48,7 +48,7 @@
   <div class="m-container m-container-inflatable">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <h1>Files</h2>
+        <h1>Files</h1>
         <ul class="m-doc">
           <li class="m-doc-collapsible">
             <a href="#" onclick="return toggle(this)">dir</a> <a href="dir_138aff360eb965c43b94267b8d1ce09e.html" class="m-doc">documentation</a> <span class="m-doc"><span></span></span>
@@ -125,7 +125,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/greeter_8h.html b/greeter_8h.html
index 2992f07..955d979 100644
--- a/greeter_8h.html
+++ b/greeter_8h.html
@@ -124,7 +124,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/index.html b/index.html
index 447b3ec..57756ac 100644
--- a/index.html
+++ b/index.html
@@ -122,7 +122,7 @@ cmake --build build --target GenerateDocs</pre></section><section id="autotoc_md
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/m-dark+documentation.compiled.css b/m-dark+documentation.compiled.css
index 56fa199..f6ce4a4 100644
--- a/m-dark+documentation.compiled.css
+++ b/m-dark+documentation.compiled.css
@@ -898,6 +898,9 @@ figure.m-figure figcaption, .m-code-figure figcaption, .m-console-figure figcapt
   font-weight: 600;
   font-size: 1.17rem;
 }
+figure.m-figure figcaption a, .m-code-figure figcaption a, .m-console-figure figcaption a {
+  text-decoration: none;
+}
 .m-imagegrid > div {
   background-color: #2f363f;
 }
@@ -1197,7 +1200,8 @@ div.m-plot svg .m-error {
   stroke-width: 1.5;
 }
 div.m-plot svg .m-label.m-dim { fill: #747474; }
-.m-graph g.m-edge path, .m-graph g.m-node.m-flat ellipse,
+.m-graph g.m-edge path, .m-graph g.m-cluster polygon,
+.m-graph g.m-node.m-flat ellipse,
 .m-graph g.m-node.m-flat polygon {
   fill: none;
 }
@@ -1511,11 +1515,13 @@ div.m-plot svg .m-bar.m-default,
 .m-graph g.m-node:not(.m-flat) polygon,
 .m-graph g.m-edge text,
 .m-graph g.m-node.m-flat text,
+.m-graph g.m-cluster text,
 .m-graph.m-default g.m-edge polygon,
 .m-graph.m-default g.m-node:not(.m-flat) ellipse,
 .m-graph.m-default g.m-node:not(.m-flat) polygon,
 .m-graph.m-default g.m-edge text,
-.m-graph.m-default g.m-node.m-flat text {
+.m-graph.m-default g.m-node.m-flat text,
+.m-graph.m-default g.m-cluster text {
   fill: #dcdcdc;
 }
 .m-graph g.m-edge polygon,
@@ -1523,11 +1529,13 @@ div.m-plot svg .m-bar.m-default,
 .m-graph g.m-node ellipse,
 .m-graph g.m-node polygon,
 .m-graph g.m-node polyline,
+.m-graph g.m-cluster polygon,
 .m-graph.m-default g.m-edge polygon,
 .m-graph.m-default g.m-edge path,
 .m-graph.m-default g.m-node ellipse,
 .m-graph.m-default g.m-node polygon,
-.m-graph.m-default g.m-node polyline {
+.m-graph.m-default g.m-node polyline,
+.m-graph.m-default g.m-cluster polygon {
   stroke: #dcdcdc;
 }
 .m-math.m-primary, .m-math g.m-primary, .m-math rect.m-primary,
@@ -1536,14 +1544,16 @@ div.m-plot svg .m-bar.m-primary,
 .m-graph.m-primary g.m-node:not(.m-flat) ellipse,
 .m-graph.m-primary g.m-node:not(.m-flat) polygon,
 .m-graph.m-primary g.m-edge text,
-.m-graph.m-primary g.m-node.m-flat text {
+.m-graph.m-primary g.m-node.m-flat text,
+.m-graph.m-primary g.m-cluster text {
   fill: #a5c9ea;
 }
 .m-graph.m-primary g.m-edge polygon,
 .m-graph.m-primary g.m-edge path,
 .m-graph.m-primary g.m-node ellipse,
 .m-graph.m-primary g.m-node polygon,
-.m-graph.m-primary g.m-node polyline {
+.m-graph.m-primary g.m-node polyline,
+.m-graph.m-primary g.m-cluster polygon {
   stroke: #a5c9ea;
 }
 .m-math.m-success, .m-math g.m-success, .m-math rect.m-success,
@@ -1552,14 +1562,16 @@ div.m-plot svg .m-bar.m-success,
 .m-graph.m-success g.m-node:not(.m-flat) ellipse,
 .m-graph.m-success g.m-node:not(.m-flat) polygon,
 .m-graph.m-success g.m-edge text,
-.m-graph.m-success g.m-node.m-flat text {
+.m-graph.m-success g.m-node.m-flat text,
+.m-graph.m-success g.m-cluster text {
   fill: #3bd267;
 }
 .m-graph.m-success g.m-edge polygon,
 .m-graph.m-success g.m-edge path,
 .m-graph.m-success g.m-node ellipse,
 .m-graph.m-success g.m-node polygon,
-.m-graph.m-success g.m-node polyline {
+.m-graph.m-success g.m-node polyline,
+.m-graph.m-success g.m-cluster polygon {
   stroke: #3bd267;
 }
 .m-math.m-warning, .m-math g.m-warning, .m-math rect.m-warning,
@@ -1568,14 +1580,16 @@ div.m-plot svg .m-bar.m-warning,
 .m-graph.m-warning g.m-node:not(.m-flat) ellipse,
 .m-graph.m-warning g.m-node:not(.m-flat) polygon,
 .m-graph.m-warning g.m-edge text,
-.m-graph.m-warning g.m-node.m-flat text {
+.m-graph.m-warning g.m-node.m-flat text,
+.m-graph.m-warning g.m-cluster text {
   fill: #c7cf2f;
 }
 .m-graph.m-warning g.m-edge polygon,
 .m-graph.m-warning g.m-edge path,
 .m-graph.m-warning g.m-node ellipse,
 .m-graph.m-warning g.m-node polygon,
-.m-graph.m-warning g.m-node polyline {
+.m-graph.m-warning g.m-node polyline,
+.m-graph.m-warning g.m-cluster polygon {
   stroke: #c7cf2f;
 }
 .m-math.m-danger, .m-math g.m-danger, .m-math rect.m-danger,
@@ -1584,14 +1598,16 @@ div.m-plot svg .m-bar.m-danger,
 .m-graph.m-danger g.m-node:not(.m-flat) ellipse,
 .m-graph.m-danger g.m-node:not(.m-flat) polygon,
 .m-graph.m-danger g.m-edge text,
-.m-graph.m-danger g.m-node.m-flat text {
+.m-graph.m-danger g.m-node.m-flat text,
+.m-graph.m-danger g.m-cluster text {
   fill: #cd3431;
 }
 .m-graph.m-danger g.m-edge polygon,
 .m-graph.m-danger g.m-edge path,
 .m-graph.m-danger g.m-node ellipse,
 .m-graph.m-danger g.m-node polygon,
-.m-graph.m-danger g.m-node polyline {
+.m-graph.m-danger g.m-node polyline,
+.m-graph.m-danger g.m-cluster polygon {
   stroke: #cd3431;
 }
 .m-math.m-info, .m-math g.m-info, .m-math rect.m-info,
@@ -1600,14 +1616,16 @@ div.m-plot svg .m-bar.m-info,
 .m-graph.m-info g.m-node:not(.m-flat) ellipse,
 .m-graph.m-info g.m-node:not(.m-flat) polygon,
 .m-graph.m-info g.m-edge text,
-.m-graph.m-info g.m-node.m-flat text {
+.m-graph.m-info g.m-node.m-flat text,
+.m-graph.m-info g.m-cluster text {
   fill: #2f83cc;
 }
 .m-graph.m-info g.m-edge polygon,
 .m-graph.m-info g.m-edge path,
 .m-graph.m-info g.m-node ellipse,
 .m-graph.m-info g.m-node polygon,
-.m-graph.m-info g.m-node polyline {
+.m-graph.m-info g.m-node polyline,
+.m-graph.m-info g.m-cluster polygon {
   stroke: #2f83cc;
 }
 .m-math.m-dim, .m-math g.m-dim, .m-math rect.m-dim,
@@ -1616,112 +1634,128 @@ div.m-plot svg .m-bar.m-dim,
 .m-graph.m-dim g.m-node:not(.m-flat) ellipse,
 .m-graph.m-dim g.m-node:not(.m-flat) polygon,
 .m-graph.m-dim g.m-edge text,
-.m-graph.m-dim g.m-node.m-flat text {
+.m-graph.m-dim g.m-node.m-flat text,
+.m-graph.m-dim g.m-cluster text {
   fill: #747474;
 }
 .m-graph.m-dim g.m-edge polygon,
 .m-graph.m-dim g.m-edge path,
 .m-graph.m-dim g.m-node ellipse,
 .m-graph.m-dim g.m-node polygon,
-.m-graph.m-dim g.m-node polyline {
+.m-graph.m-dim g.m-node polyline,
+.m-graph.m-dim g.m-cluster polygon {
   stroke: #747474;
 }
 .m-graph g.m-edge.m-default polygon,
 .m-graph g.m-node.m-default:not(.m-flat) ellipse,
 .m-graph g.m-node.m-default:not(.m-flat) polygon,
 .m-graph g.m-edge.m-default text,
-.m-graph g.m-node.m-default.m-flat text {
+.m-graph g.m-node.m-default.m-flat text,
+.m-graph g.m-cluster.m-default text {
   fill: #dcdcdc;
 }
 .m-graph g.m-edge.m-default polygon,
 .m-graph g.m-edge.m-default path,
 .m-graph g.m-node.m-default ellipse,
 .m-graph g.m-node.m-default polygon,
-.m-graph g.m-node.m-default polyline {
+.m-graph g.m-node.m-default polyline,
+.m-graph g.m-cluster.m-default polygon {
   stroke: #dcdcdc;
 }
 .m-graph g.m-edge.m-primary polygon,
 .m-graph g.m-node.m-primary:not(.m-flat) ellipse,
 .m-graph g.m-node.m-primary:not(.m-flat) polygon,
 .m-graph g.m-edge.m-primary text,
-.m-graph g.m-node.m-primary.m-flat text {
+.m-graph g.m-node.m-primary.m-flat text,
+.m-graph g.m-cluster.m-primary text {
   fill: #a5c9ea;
 }
 .m-graph g.m-edge.m-primary polygon,
 .m-graph g.m-edge.m-primary path,
 .m-graph g.m-node.m-primary ellipse,
 .m-graph g.m-node.m-primary polygon,
-.m-graph g.m-node.m-primary polyline {
+.m-graph g.m-node.m-primary polyline,
+.m-graph g.m-cluster.m-primary polygon {
   stroke: #a5c9ea;
 }
 .m-graph g.m-edge.m-success polygon,
 .m-graph g.m-node.m-success:not(.m-flat) ellipse,
 .m-graph g.m-node.m-success:not(.m-flat) polygon,
 .m-graph g.m-edge.m-success text,
-.m-graph g.m-node.m-success.m-flat text {
+.m-graph g.m-node.m-success.m-flat text,
+.m-graph g.m-cluster.m-success text {
   fill: #3bd267;
 }
 .m-graph g.m-edge.m-success polygon,
 .m-graph g.m-edge.m-success path,
 .m-graph g.m-node.m-success ellipse,
 .m-graph g.m-node.m-success polygon,
-.m-graph g.m-node.m-success polyline {
+.m-graph g.m-node.m-success polyline,
+.m-graph g.m-cluster.m-success polygon {
   stroke: #3bd267;
 }
 .m-graph g.m-edge.m-warning polygon,
 .m-graph g.m-node.m-warning:not(.m-flat) ellipse,
 .m-graph g.m-node.m-warning:not(.m-flat) polygon,
 .m-graph g.m-edge.m-warning text,
-.m-graph g.m-node.m-warning.m-flat text {
+.m-graph g.m-node.m-warning.m-flat text,
+.m-graph g.m-cluster.m-warning text {
   fill: #c7cf2f;
 }
 .m-graph g.m-edge.m-warning polygon,
 .m-graph g.m-edge.m-warning path,
 .m-graph g.m-node.m-warning ellipse,
 .m-graph g.m-node.m-warning polygon,
-.m-graph g.m-node.m-warning polyline {
+.m-graph g.m-node.m-warning polyline,
+.m-graph g.m-cluster.m-warning polygon {
   stroke: #c7cf2f;
 }
 .m-graph g.m-edge.m-danger polygon,
 .m-graph g.m-node.m-danger:not(.m-flat) ellipse,
 .m-graph g.m-node.m-danger:not(.m-flat) polygon,
 .m-graph g.m-edge.m-danger text,
-.m-graph g.m-node.m-danger.m-flat text {
+.m-graph g.m-node.m-danger.m-flat text,
+.m-graph g.m-cluster.m-danger text {
   fill: #cd3431;
 }
 .m-graph g.m-edge.m-danger polygon,
 .m-graph g.m-edge.m-danger path,
 .m-graph g.m-node.m-danger ellipse,
 .m-graph g.m-node.m-danger polygon,
-.m-graph g.m-node.m-danger polyline {
+.m-graph g.m-node.m-danger polyline,
+.m-graph g.m-cluster.m-danger polygon {
   stroke: #cd3431;
 }
 .m-graph g.m-edge.m-info polygon,
 .m-graph g.m-node.m-info:not(.m-flat) ellipse,
 .m-graph g.m-node.m-info:not(.m-flat) polygon,
 .m-graph g.m-edge.m-info text,
-.m-graph g.m-node.m-info.m-flat text {
+.m-graph g.m-node.m-info.m-flat text,
+.m-graph g.m-cluster.m-info text {
   fill: #2f83cc;
 }
 .m-graph g.m-edge.m-info polygon,
 .m-graph g.m-edge.m-info path,
 .m-graph g.m-node.m-info ellipse,
 .m-graph g.m-node.m-info polygon,
-.m-graph g.m-node.m-info polyline {
+.m-graph g.m-node.m-info polyline,
+.m-graph g.m-cluster.m-info polygon {
   stroke: #2f83cc;
 }
 .m-graph g.m-edge.m-dim polygon,
 .m-graph g.m-node.m-dim:not(.m-flat) ellipse,
 .m-graph g.m-node.m-dim:not(.m-flat) polygon,
 .m-graph g.m-edge.m-dim text,
-.m-graph g.m-node.m-dim.m-flat text {
+.m-graph g.m-node.m-dim.m-flat text,
+.m-graph g.m-cluster.m-dim text {
   fill: #747474;
 }
 .m-graph g.m-edge.m-dim polygon,
 .m-graph g.m-edge.m-dim path,
 .m-graph g.m-node.m-dim ellipse,
 .m-graph g.m-node.m-dim polygon,
-.m-graph g.m-node.m-dim polyline {
+.m-graph g.m-node.m-dim polyline,
+.m-graph g.m-cluster.m-dim polygon {
   stroke: #747474;
 }
 p, ul, ol, dl, blockquote, pre, .m-code-figure, .m-console-figure, hr, .m-note,
@@ -2559,7 +2593,6 @@ article:last-child, article section:last-child { margin-bottom: 0; }
 .m-console .g-AnsiBackgroundBrightWhite { background-color: #ffffff }
 .m-console .g-AnsiBackgroundBrightYellow { background-color: #fdbc4b }
 .m-console .g-AnsiBackgroundCyan { background-color: #1abc9c }
-.m-console .g-AnsiBackgroundDefault { background-color: #fcfcfc }
 .m-console .g-AnsiBackgroundGreen { background-color: #11d116 }
 .m-console .g-AnsiBackgroundMagenta { background-color: #9b59b6 }
 .m-console .g-AnsiBackgroundRed { background-color: #ed1515 }
@@ -2577,7 +2610,6 @@ article:last-child, article section:last-child { margin-bottom: 0; }
 .m-console .g-AnsiBrightWhite { color: #ffffff; font-weight: bold }
 .m-console .g-AnsiBrightYellow { color: #fdbc4b; font-weight: bold }
 .m-console .g-AnsiCyan { color: #1abc9c }
-.m-console .g-AnsiDefault { color: #fcfcfc }
 .m-console .g-AnsiGreen { color: #11d116 }
 .m-console .g-AnsiMagenta { color: #9b59b6 }
 .m-console .g-AnsiRed { color: #ed1515 }
@@ -2629,7 +2661,7 @@ span.m-doc-wrap-bumper {
   margin-right: -1rem;
 }
 span.m-doc-wrap {
-  padding-left: 1rem;
+  margin-left: 1rem;
   display: inline-block;
   vertical-align: text-top;
   white-space: pre-line;
diff --git a/modules.html b/modules.html
index a053001..1b70401 100644
--- a/modules.html
+++ b/modules.html
@@ -48,7 +48,7 @@
   <div class="m-container m-container-inflatable">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <h1>Modules</h2>
+        <h1>Modules</h1>
         <ul class="m-doc">
         </ul>
         <script>
@@ -111,7 +111,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/namespacegreeter.html b/namespacegreeter.html
index e7e2725..e650195 100644
--- a/namespacegreeter.html
+++ b/namespacegreeter.html
@@ -139,7 +139,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/namespaces.html b/namespaces.html
index 8c94fcd..d6ad875 100644
--- a/namespaces.html
+++ b/namespaces.html
@@ -48,7 +48,7 @@
   <div class="m-container m-container-inflatable">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <h1>Namespaces</h2>
+        <h1>Namespaces</h1>
         <ul class="m-doc">
           <li>namespace <a href="namespacegreeter.html" class="m-doc">greeter</a> <span class="m-doc"><span></span></span></li>
         </ul>
@@ -112,7 +112,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/pages.html b/pages.html
index 8dbd311..354c091 100644
--- a/pages.html
+++ b/pages.html
@@ -48,7 +48,7 @@
   <div class="m-container m-container-inflatable">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <h1>Pages</h2>
+        <h1>Pages</h1>
         <ul class="m-doc">
           <li><a href="about.html" class="m-doc">About</a> <span class="m-doc"></span></li>
         </ul>
@@ -112,7 +112,7 @@
   <div class="m-container">
     <div class="m-row">
       <div class="m-col-l-10 m-push-l-1">
-        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.19 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
+        <p>Greeter. Created with <a href="https://doxygen.org/">Doxygen</a> 1.8.20 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
       </div>
     </div>
   </div>
diff --git a/search-v1.js b/search-v1.js
index 56ba52f..5346fa6 100644
--- a/search-v1.js
+++ b/search-v1.js
@@ -666,8 +666,10 @@ if(typeof document !== 'undefined') {
             } else if(event.key == 'Tab' && !event.shiftKey && !event.ctrlKey && !event.altKey && !event.metaKey) {
                 /* But only if the input has selection at the end */
                 let input = document.getElementById('search-input');
-                if(input.selectionEnd == input.value.length && input.selectionStart != input.selectionEnd)
+                if(input.selectionEnd == input.value.length && input.selectionStart != input.selectionEnd) {
                     input.setSelectionRange(input.value.length, input.value.length);
+                    return false; /* so input won't lose focus */
+                }
 
             /* Select next item */
             } else if(event.key == 'ArrowDown') {