diff --git a/doc/images/HNix.svg b/doc/images/HNix.svg
new file mode 100644
index 0000000..9f4ba84
--- /dev/null
+++ b/doc/images/HNix.svg
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   id="svg18"
+   version="1.1"
+   width="91.152672mm"
+   height="41.381454mm"
+   viewBox="0 0 91.152672 41.381454">
+  <metadata
+     id="metadata22">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs10">
+    <linearGradient
+       x1="0.852"
+       y1="0.148"
+       x2="0.148"
+       y2="0.852"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(94.626,0,0,-94.626,203.937,2233.813)"
+       spreadMethod="pad"
+       id="b">
+      <stop
+         id="stop2"
+         stop-color="#16c0f0"
+         offset="0" />
+      <stop
+         id="stop4"
+         stop-color="#8a25b1"
+         offset="1" />
+    </linearGradient>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="a">
+      <path
+         id="path7"
+         d="M 54,2329 H 3113.5 V 76.301 H 54 Z" />
+    </clipPath>
+  </defs>
+  <g
+     id="g16"
+     transform="matrix(0.35278,0,0,-0.35278,-19.174028,793.0442)"
+     clip-path="url(#a)">
+    <path
+       style="fill:url(#b)"
+       id="path12"
+       d="m 263.078,2221.984 c -19.59,0 -35.484,-15.886 -35.484,-35.48 0,-13.063 10.59,-23.656 23.656,-23.656 13.062,0 23.652,10.593 23.656,23.656 0,8.703 -7.058,15.769 -15.769,15.769 -8.711,0 -15.774,-7.066 -15.774,-15.773 a 7.885,7.885 0 0 1 7.887,-7.883 7.885,7.885 0 0 1 7.887,7.883 h -7.887 a 7.885,7.885 0 0 0 7.887,7.887 7.882,7.882 0 0 0 7.883,-7.887 c 0,-8.711 -7.063,-15.77 -15.77,-15.77 -8.711,0 -15.77,7.059 -15.77,15.77 0,13.062 10.59,23.656 23.657,23.656 13.066,0 23.652,-10.59 23.656,-23.652 v -0.01 c -0.004,-17.418 -14.125,-31.543 -31.543,-31.543 -17.418,0 -31.543,14.125 -31.543,31.543 v 0.01 c 0,23.949 19.422,43.367 43.371,43.367 3.106,0 6.125,-0.34 9.043,-0.961 -6.301,3.11 -13.371,4.902 -20.871,4.902 -26.129,0 -47.312,-21.183 -47.312,-47.312 0,-26.129 21.183,-47.312 47.312,-47.312 26.129,0 47.312,21.183 47.312,47.312 0,1.223 -0.093,2.426 -0.183,3.625 -1.817,17.895 -16.926,31.859 -35.301,31.859 z" />
+    <path
+       style="fill:#343f4d"
+       id="path14"
+       d="m 91.203,2191.719 3.356,-0.063 -0.059,4.438 v 12.707 c 0.84,0.16 1.906,0.242 3.207,0.242 1.297,0 2.367,-0.082 3.207,-0.242 v -40.942 c -0.918,-0.16 -1.988,-0.242 -3.207,-0.242 -1.219,0 -2.289,0.082 -3.207,0.242 v 14.028 l 0.059,4.437 -3.356,-0.062 H 81.07 l -3.414,0.062 0.059,-4.437 v -14.028 c -0.84,-0.16 -1.91,-0.242 -3.207,-0.242 -1.301,0 -2.348,0.082 -3.149,0.242 v 40.942 c 0.801,0.16 1.848,0.242 3.149,0.242 1.297,0 2.367,-0.082 3.207,-0.242 v -12.707 l -0.059,-4.438 3.414,0.063 z m 48.016,17.324 h 2.101 l 0.36,-0.301 v -40.824 c -1.121,-0.199 -2.399,-0.301 -3.84,-0.301 -1.438,0 -2.715,0.082 -3.836,0.242 l -12.77,25.118 a 236.242,236.242 0 0 0 -3.773,8.332 l -0.242,-0.059 c 0.359,-6.195 0.539,-11.09 0.539,-14.688 v -18.703 a 18.159,18.159 0 0 0 -2.996,-0.242 c -1.039,0 -2.02,0.082 -2.938,0.242 v 40.883 c 1.121,0.199 2.387,0.301 3.809,0.301 1.418,0 2.687,-0.082 3.805,-0.242 l 12.648,-25.117 c 0.559,-1.2 1.301,-2.829 2.219,-4.883 0.918,-2.059 1.5,-3.328 1.738,-3.809 l 0.238,0.059 a 245.112,245.112 0 0 0 -0.476,15.109 v 14.926 c 0,1.437 0.25,2.457 0.746,3.059 0.5,0.597 1.39,0.898 2.668,0.898 z m 19.605,-16.727 v -24.457 c -0.762,-0.16 -1.789,-0.242 -3.09,-0.242 -1.296,0 -2.328,0.082 -3.086,0.242 v 21.942 c 0,1.117 -0.199,1.918 -0.597,2.394 -0.403,0.481 -1.082,0.723 -2.039,0.723 h -0.66 c -0.2,0.879 -0.301,1.617 -0.301,2.215 0,0.601 0.101,1.359 0.301,2.281 a 31.4,31.4 0 0 0 3.777,0.238 h 0.84 c 1.515,0 2.707,-0.48 3.566,-1.437 0.86,-0.961 1.289,-2.258 1.289,-3.899 z m -7.496,10.731 c -0.359,0.719 -0.539,1.598 -0.539,2.637 0,1.64 0.301,2.609 0.902,2.91 0.598,0.297 1.598,0.468 2.997,0.508 1.597,-0.04 2.617,-0.239 3.058,-0.598 0.438,-0.359 0.676,-1.301 0.719,-2.82 -0.043,-1.438 -0.281,-2.356 -0.719,-2.754 -0.441,-0.403 -1.461,-0.621 -3.058,-0.66 -1.559,0 -2.68,0.257 -3.36,0.777 z m 25.84,-14.867 5.695,9.293 c 0.719,0.16 1.598,0.238 2.637,0.238 1.039,0 2.02,-0.137 2.938,-0.418 l 0.179,-0.481 -8.453,-13.246 9.652,-14.75 c -1.48,-0.957 -2.878,-1.437 -4.195,-1.437 -1.32,0 -2.418,0.621 -3.297,1.859 l -5.996,9.172 -6.473,-10.613 c -0.48,-0.156 -1.339,-0.238 -2.578,-0.238 -1.242,0 -2.3,0.16 -3.179,0.48 l -0.18,0.481 9.414,14.625 -8.633,13.367 c 1.278,0.961 2.606,1.441 3.985,1.441 1.378,0 2.507,-0.621 3.386,-1.859 z" />
+  </g>
+</svg>