diff --git a/doc/grid.png b/doc/grid.png
index ab31f88..270d94e 100644
Binary files a/doc/grid.png and b/doc/grid.png differ
diff --git a/icons/config.json b/icons/config.json
index 0cf4dc1..56f8ee3 100644
--- a/icons/config.json
+++ b/icons/config.json
@@ -337,6 +337,9 @@
     "name": "Hi-Fi"
   },
   "historic": {},
+  "hopscotch": {
+    "name": "hopscotch"
+  },
   "horizontal_bar": {
     "name": "high horizontal bar"
   },
diff --git a/icons/icons.svg b/icons/icons.svg
index 1c806e7..fb45454 100644
--- a/icons/icons.svg
+++ b/icons/icons.svg
@@ -1,18 +1,19 @@
 <?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="http://www.w3.org/2000/svg"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-        xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-        sodipodi:docname="icons.svg"
-        inkscape:version="0.91 r13725"
-        version="1.1"
-        id="svg2987"
-        height="600px"
-        width="800px">
+   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"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   sodipodi:docname="icons.svg"
+   inkscape:version="0.91 r13725"
+   version="1.1"
+   id="svg2987"
+   height="600px"
+   width="800px">
   <defs
      id="defs2989">
     <marker
@@ -147,9 +148,9 @@
      showgrid="true"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
-     inkscape:cy="104.45554"
-     inkscape:cx="248.84932"
-     inkscape:zoom="22.627417"
+     inkscape:cy="402.90794"
+     inkscape:cx="644.98339"
+     inkscape:zoom="5.6568542"
      inkscape:pageshadow="2"
      inkscape:pageopacity="0.0"
      borderopacity="1.0"
@@ -560,6 +561,15 @@
      inkscape:label="main"
      id="layer1"
      style="display:inline">
+    <rect
+       style="opacity:1;fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect8034"
+       width="16"
+       height="16"
+       x="448"
+       y="64"
+       rx="0"
+       ry="0" />
     <path
        style="opacity:1;fill:none;fill-opacity:1;stroke:#cccccc;stroke-width:0.7;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
        d="m 298,131 -4,2 4,2"
@@ -18527,8 +18537,12 @@
     <path
        style="opacity:1;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
        d="m 645,209 0,1 0,3 -1,0 -1,0 0,1 0,3 0,1 1,0 1,0 0,4 1,0 4,0 0,-1 0,-3 1,0 1,0 0,-1 0,-4 -2,0 0,-4 -4,0 -1,0 z m 1,1 3,0 0,3 -3,0 0,-3 z m -2,4 3,0 0,3 -1,0 -1,0 -1,0 0,-3 z m 4,0 3,0 0,3 -1,0 -1,0 -1,0 0,-3 z m -2,4 1,0 1,0 1,0 0,3 -3,0 0,-3 z"
-       id="rect25259"
-       inkscape:connector-curvature="0" />
+       id="hopscotch"
+       inkscape:connector-curvature="0"
+       inkscape:label="#rect25259">
+      <title
+         id="title8110">hopscotch</title>
+    </path>
     <path
        sodipodi:nodetypes="cc"
        inkscape:connector-curvature="0"
@@ -19660,7 +19674,7 @@
        width="4"
        height="1"
        x="422"
-       y="297"
+       y="301"
        rx="0.5"
        ry="0.5" />
     <path
@@ -20938,5 +20952,227 @@
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        id="rect8011"
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+    <circle
+       style="opacity:0.2;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path8026"
+       cx="408"
+       cy="76"
+       r="1.5" />
+    <circle
+       r="1.5"
+       cy="76"
+       cx="413"
+       id="circle8028"
+       style="opacity:0.2;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+    <path
+       style="opacity:0.2;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       d="m 409.5,76 1,-8.5"
+       id="path8030"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cc" />
+    <path
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+       d="m 411.5,76 -1,-8.5"
+       id="path8032"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cc" />
+    <path
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+       sodipodi:nodetypes="cc"
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+    <circle
+       r="1.5"
+       cy="76"
+       cx="424"
+       id="circle8046"
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+    <circle
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="circle8048"
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+       inkscape:connector-curvature="0"
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+       sodipodi:nodetypes="cc"
+       inkscape:connector-curvature="0"
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+    <path
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+       inkscape:connector-curvature="0"
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+    <path
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+       width="4"
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+    <path
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+       inkscape:connector-curvature="0"
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+    <rect
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+       id="rect8080"
+       width="1"
+       height="4"
+       x="436"
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+    <path
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+    <path
+       style="opacity:1;fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
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+    <path
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+       sodipodi:type="arc"
+       sodipodi:cx="404.5"
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+       sodipodi:nodetypes="ccccc"
+       inkscape:connector-curvature="0"
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+       style="opacity:1;fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+    <rect
+       style="opacity:1;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
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+       style="opacity:1;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect8104"
+       width="4"
+       height="6"
+       x="-455"
+       y="-72"
+       rx="1.5"
+       ry="1.4999999"
+       transform="scale(-1,-1)" />
+    <rect
+       y="-73"
+       x="-455"
+       height="3"
+       width="4"
+       id="rect8106"
+       style="opacity:1;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       transform="scale(-1,-1)" />
+    <rect
+       ry="0.5"
+       rx="0.5"
+       y="297"
+       x="422"
+       height="1"
+       width="4"
+       id="rect8108"
+       style="opacity:1;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
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diff --git a/roentgen/__init__.py b/roentgen/__init__.py
index 7842176..c633053 100644
--- a/roentgen/__init__.py
+++ b/roentgen/__init__.py
@@ -2,6 +2,11 @@
 Röntgen project: simple Python map renderer for OpenStreetMap and icon set.
 """
 
+__project__ = "Röntgen"
+__description__ = (
+    "simple Python map renderer for OpenStreetMap with custom icon set "
+    "intended to display as many tags as possible"
+)
 __url__ = "https://github.com/enzet/Roentgen"
 __author__ = "Sergey Vartanov"
 __email__ = "me@enzet.ru"
diff --git a/roentgen/grid.py b/roentgen/grid.py
index 3240e15..b8fffb0 100644
--- a/roentgen/grid.py
+++ b/roentgen/grid.py
@@ -1,7 +1,7 @@
 """
 Icon grid drawing.
 """
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Dict, List, Optional, Set
 
@@ -24,7 +24,7 @@ class IconCollection:
     """
 
     icons: List[Icon]
-    selectors: Dict[str, Icon]
+    selectors: Dict[str, Icon] = field(default_factory=dict)
 
     @classmethod
     def from_scheme(
diff --git a/scheme/default.yml b/scheme/default.yml
index f90c180..e430176 100644
--- a/scheme/default.yml
+++ b/scheme/default.yml
@@ -788,6 +788,8 @@ node_icons:
       shapes: [horizontal_ladder]
     - tags: {fitness_station: push-up}
       shapes: [low_horizontal_bars]
+    - tags: {playground: hopscotch}
+      shapes: [hopscotch]
     - tags: {playground: slide}
       shapes: [slide]
     - tags: {playground: roundabout}