diff --git a/.github/workflows/fossil.yml b/.github/workflows/fossil.yml
index d95934b..8867e9b 100644
--- a/.github/workflows/fossil.yml
+++ b/.github/workflows/fossil.yml
@@ -37,5 +37,8 @@ jobs:
         # when running locally using `gh act` command
         run: sudo apt-get install -y fossil
 
-      - name: Run tests and coverage
+      - name: Run code tests and coverage
         run: xvfb-run -a npm run coverage-ci $GITHUB_STEP_SUMMARY
+
+      - name: Run pikchr grammar tests
+        run: npm run grammar-test
diff --git a/.vscode/settings.json b/.vscode/settings.json
index a15cf51..e6e98e4 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -16,6 +16,7 @@
         "fslckout",
         "humanise",
         "outfile",
+        "pikchr",
         "repourl",
         "sequentialize",
         "Technote",
diff --git a/.vscodeignore b/.vscodeignore
index bcaa37f..4c65069 100644
--- a/.vscodeignore
+++ b/.vscodeignore
@@ -11,3 +11,5 @@ docs/
 images/
 node_modules
 src/
+pikchr/test/*
+pikchr/*.py
diff --git a/package.json b/package.json
index 2c0910b..4fc84ad 100644
--- a/package.json
+++ b/package.json
@@ -1063,6 +1063,31 @@
                     }
                 ]
             }
+        ],
+        "languages": [
+            {
+                "id": "pikchr",
+                "extensions": [
+                    ".pikchr"
+                ],
+                "icon": {
+                    "dark": "pikchr/assets/pikchr.svg",
+                    "light": "pikchr/assets/pikchr.svg"
+                }
+            }
+        ],
+        "grammars": [
+            {
+                "language": "pikchr",
+                "scopeName": "source.pikchr",
+                "path": "./pikchr/pikchr.tmLanguage.json",
+                "injectTo": [
+                    "text.html.markdown"
+                ],
+                "embeddedLanguages": {
+                    "meta.embedded.block.pikchr": "pikchr"
+                }
+            }
         ]
     },
     "scripts": {
@@ -1078,7 +1103,8 @@
         "lint": "eslint ./src --ext .ts src media",
         "lint:fix": "eslint --fix --ext .ts src media",
         "esbuild-base": "esbuild ./src/main.ts --bundle --outfile=out/main.js --external:vscode --format=cjs --platform=node",
-        "esbuild": "npm run esbuild-base -- --sourcemap"
+        "esbuild": "npm run esbuild-base -- --sourcemap",
+        "grammar-test": "vscode-tmgrammar-test ./pikchr/test/*.test.pikchr"
     },
     "dependencies": {
         "vscode-nls": "^5.0.1"
@@ -1105,11 +1131,12 @@
         "mocha": "~10.2.0",
         "prettier": "~2.8.8",
         "sinon": "~17.0.1",
-        "typescript": "^5.2.2"
+        "typescript": "^5.2.2",
+        "vscode-tmgrammar-test": "^0.1.3"
     },
     "__metadata": {
         "id": "e828bfe6-95e7-4c7a-a334-ae2cc5ba8788",
         "publisherDisplayName": "koog1000",
         "publisherId": "8e4cabe1-5c1f-4bf5-bbf3-8bb8d5de842c"
     }
-}
\ No newline at end of file
+}
diff --git a/pikchr/assets/pikchr.svg b/pikchr/assets/pikchr.svg
new file mode 100644
index 0000000..36e0b42
--- /dev/null
+++ b/pikchr/assets/pikchr.svg
@@ -0,0 +1,3 @@
+<svg class="pikchr" width="64" height="64" version="1.1" viewBox="0 0 64 64" xmlns="http://www.w3.org/2000/svg">
+<path d="m27.2 9.99h18.8c5.6 0 9.9 1.25 12.9 3.74 3.01 2.48 4.51 6.01 4.51 10.6 0 4.62-1.5 8.18-4.51 10.7-2.99 2.48-7.28 3.71-12.9 3.71h-7.49v15.3h-11.4zm11.4 8.23v12.3h6.28c2.2 0 3.9-0.531 5.1-1.59 1.2-1.08 1.8-2.6 1.8-4.57 0-1.97-0.599-3.48-1.8-4.54-1.2-1.06-2.9-1.59-5.1-1.59z" fill="#9351ba"/>
+</svg>
\ No newline at end of file
diff --git a/pikchr/pikchr.tmLanguage.json b/pikchr/pikchr.tmLanguage.json
new file mode 100644
index 0000000..3121acb
--- /dev/null
+++ b/pikchr/pikchr.tmLanguage.json
@@ -0,0 +1,671 @@
+{
+  "scopeName": "source.pikchr",
+  "comment": "regexp test https://rubular.com/",
+  "patterns": [
+    {
+      "include": "#statement-list"
+    }
+  ],
+  "repository": {
+    "statement-list": {
+      "patterns": [
+        {
+          "include": "#whitespace"
+        },
+        {
+          "include": "#statement"
+        },
+        {
+          "include": "#eol"
+        }
+      ]
+    },
+    "eol": {
+      "comment": "T_EOL was `\\Z|$|(;)`",
+      "match": "\\n\\Z|(;)\\s*",
+      "name": "punctuation.separator.delimiter.end.pikchr"
+    },
+    "syntax-error": {
+      "comment": "T_ERROR (maybe)",
+      "match": "\\w+",
+      "name": "invalid.illegal.pikchr"
+    },
+    "statement": {
+      "patterns": [
+        {
+          "include": "#direction"
+        },
+        {
+          "match": "(:?[A-Z]\\w*)(:)",
+          "captures": {
+            "1": {
+              "name": "variable.language.pikchr"
+            },
+            "2": {
+              "name": "punctuation.separator.pikchr"
+            }
+          }
+        },
+        {
+          "include": "#unnamed-statement"
+        },
+        {
+          "include": "#define-id-codeblock"
+        },
+        {
+          "include": "#lvalue"
+        },
+        {
+          "begin": "\\s*(=)\\s*",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.operator.assignment.pikchr"
+            }
+          },
+          "patterns": [
+            {
+              "include": "#rvalue"
+            }
+          ],
+          "name": "meta.assignment.pickchr",
+          "applyEndPatternLast": true,
+          "end": "(?:)"
+        }
+      ]
+    },
+    "define-id-codeblock": {
+      "begin": "(?<=^|;|:)\\s*\\b(define)\\b\\s*",
+      "beginCaptures": {
+        "1": {
+          "name": "keyword.control.directive.define.pikchr"
+        }
+      },
+      "patterns": [
+        {
+          "include": "#id"
+        },
+        {
+          "begin": "{",
+          "captures": {
+            "0": {
+              "name": "punctuation.section.block.begin.bracket.curly.pikchr"
+            }
+          },
+          "patterns": [
+            {
+              "include": "#unnamed-statement"
+            }
+          ],
+          "end": "}",
+          "endCaptures": {
+            "0": {
+              "name": "punctuation.section.block.end.bracket.curly.pikchr"
+            }
+          }
+        }
+      ],
+      "end": "(?:(?<!\\\\)(?:\\Z|$))|(;)",
+      "endCaptures": {
+        "1": {
+          "name": "punctuation.separator.delimiter.end.pikchr"
+        }
+      }
+    },
+    "unnamed-statement": {
+      "patterns": [
+        {
+          "include": "#basetype"
+        }
+      ]
+    },
+    "basetype": {
+      "patterns": [
+        {
+          "include": "#basetype-classname"
+        }
+      ]
+    },
+    "basetype-classname": {
+      "begin": "(?<=^|;|:)\\s*(?:\\b(arc|arrow|box|circle|cylinder|diamond|dot|ellipse|file|line|move|oval|spline|text)\\b|(\".*\"))\\s*",
+      "beginCaptures": {
+        "1": {
+          "name": "storage.type.class.pikchr"
+        },
+        "2": {
+          "patterns": [
+            {
+              "include": "#string"
+            }
+          ]
+        }
+      },
+      "applyEndPatternLast": false,
+      "end": "(?<!\\\\)(?=\\n)|(;)",
+      "endCaptures": {
+        "1": {
+          "name": "punctuation.separator.delimiter.end.pikchr"
+        }
+      },
+      "patterns": [
+        {
+          "include": "#attribute"
+        }
+      ]
+    },
+    "string-then-text-attributes": {
+      "begin": "(?=\\s*\")",
+      "patterns": [
+        {
+          "include": "#string"
+        },
+        {
+          "include": "#text-attribute"
+        },
+        {
+          "include": "#text-position"
+        }
+      ],
+      "applyEndPatternLast": true,
+      "end": "(?!\\G)"
+    },
+    "expr": {
+      "patterns": [
+        {
+          "include": "#number"
+        },
+        {
+          "include": "#variable"
+        },
+        {
+          "include": "#colorname"
+        },
+        {
+          "match": "[-+*\\/]",
+          "name": "keyword.operator.arithmetic.pikchr"
+        },
+        {
+          "include": "#id"
+        },
+        {
+          "match": ",\\s*",
+          "name": "punctuation.separator.pikchr"
+        },
+        {
+          "comment": "object->DOT_L->{numproperty,dashproperty,colorproperty}",
+          "match": "\\b(\\.)(diameter|ht|height|rad|radius|thickness|width|wid|dashed|dotted|fill|color)\\s*",
+          "captures": {
+            "1": {
+              "name": "punctuation.separator.period.pikchr"
+            },
+            "2": {
+              "name": "support.constant.property-value.pikchr"
+            }
+          }
+        },
+        {
+          "begin": "(\\()\\s*",
+          "beginCaptures": {
+            "1": {
+              "name": "punctuation.parenthesis.begin.pikch"
+            }
+          },
+          "patterns": [
+            {
+              "include": "#expr"
+            }
+          ],
+          "end": "(\\))\\s*",
+          "endCaptures": {
+            "1": {
+              "name": "punctuation.parenthesis.end.pikchr"
+            }
+          }
+        },
+        {
+          "include": "$self"
+        }
+      ]
+    },
+    "object": {
+      "patterns": [
+        {
+          "include": "#objctname"
+        },
+        {
+          "include": "#nth"
+        },
+        {
+          "patterns": [
+            {
+              "include": "$self"
+            },
+            {
+              "comment": "dot_u->placename",
+              "match": "(\\.)(:?[A-Z]\\w*)",
+              "captures": {
+                "1": {
+                  "name": "punctuation.separator.period.pikchr"
+                },
+                "2": {
+                  "name": "entity.name.tag.pikchr"
+                }
+              }
+            }
+          ]
+        }
+      ]
+    },
+    "objctname": {
+      "patterns": [
+        {
+          "match": "\\bthis\\b",
+          "name": "tag.pikchr"
+        },
+        {
+          "include": "#placename"
+        },
+        {
+          "include": "$self"
+        }
+      ]
+    },
+    "attribute-then": {
+      "begin": "\\b(then|go)\\b\\s*",
+      "beginCaptures": {
+        "1": {
+          "name": "keyword.pikchr"
+        }
+      },
+      "patterns": [
+        {
+          "include": "#edge"
+        },
+        {
+          "match": "\\b(heading)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "pikchr.keyword"
+            }
+          }
+        }
+      ],
+      "applyEndPatternLast": true,
+      "end": "(?:)"
+    },
+    "percent-sign": {
+      "match": "(%)\\s*",
+      "captures": {
+        "1": {
+          "name": "keyword.other.unit.percentage.pikchr"
+        }
+      }
+    },
+    "number": {
+      "comment": "see `pik_atof` from pikchr.y",
+      "patterns": [
+        {
+          "match": "\\b(0[xX]\\h{1,8})\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "constant.numeric.pikchr"
+            }
+          }
+        },
+        {
+          "match": "((?:\\d*\\.)?\\d+(in|cm|px|pt|pc|mm|%)?)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "constant.numeric.pikchr"
+            },
+            "2": {
+              "name": "keyword.other.unit.$2.pikchr"
+            }
+          }
+        }
+      ]
+    },
+    "placename": {
+      "patterns": [
+        {
+          "match": "([A-Z]\\w*)\\s*",
+          "captures": {
+            "1": {
+              "name": "variable.language.pikchr"
+            }
+          }
+        },
+        {
+          "comment": "color is a part of placename, according to pikchr.y",
+          "include": "#colorname"
+        }
+      ]
+    },
+    "variable": {
+      "match": "^[a-z_$@][\\w$@]*",
+      "name": "entity.name.tag.pikchr"
+    },
+    "attribute": {
+      "patterns": [
+        {
+          "include": "#dashproperty"
+        },
+        {
+          "include": "#boolproperty"
+        },
+        {
+          "include": "#attribute-then"
+        },
+        {
+          "include": "#go-until-even"
+        },
+        {
+          "include": "#colorproperty-then-rvalue"
+        },
+        {
+          "include": "#numproperty"
+        },
+        {
+          "include": "#percent-sign"
+        },
+        {
+          "include": "#string-then-text-attributes"
+        },
+        {
+          "match": "\\b(:?close|chop|from|to|at)\\b",
+          "name": "keyword.pikchr"
+        },
+        {
+          "match": "\\b(with)\\b",
+          "name": "constant.language.pikchr"
+        },
+        {
+          "include": "#expr"
+        }
+      ]
+    },
+    "dashproperty": {
+      "match": "\\b(dashed|dotted)\\b\\s*",
+      "captures": {
+        "1": {
+          "name": "entity.name.tag.pikchr"
+        }
+      }
+    },
+    "boolproperty": {
+      "comment": "Properties with no argument",
+      "match": "(<->|<-|->)|\\b(cw|ccw|invis(ible)?|thick|thin|solid|same|chop|fit)\\b\\s*",
+      "captures": {
+        "1": {
+          "name": "entity.name.tag.pikchr"
+        },
+        "2": {
+          "name": "entity.name.tag.pikchr"
+        }
+      }
+    },
+    "nth": {
+      "patterns": [
+        {
+          "comment": "last, previous",
+          "match": "\\b(last|previous)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "entity.name.type"
+            }
+          }
+        },
+        {
+          "match": "\\b(first|\\d+(th|rd|nd|st))\\b\\s*",
+          "name": "constant.language.pikchr"
+        },
+        {
+          "include": "#object-class"
+        }
+      ]
+    },
+    "object-class": {
+      "match": "\\b(arc|arrow|box|circle|cylinder|diamond|dot|ellipse|file|line|move|oval|spline|text)\\b",
+      "name": "keyword.pikchr"
+    },
+    "text-attribute": {
+      "match": "\\b(above|aligned|below|big|bold|mono|monospace|center|italic|ljust|rjust|small)\\b\\s*",
+      "name": "constant.other.pikchr"
+    },
+    "text-position": {
+      "match": "\\b(above|aligned|below|big|bold|center|italic|ljust|mono|rjust|small)\\b\\s*",
+      "name": "constant.other.pikchr"
+    },
+    "edge": {
+      "match": "\\b(bot|bottom|c|center|e|east|end|left|n|ne|north|nw|right|s|se|south|start|sw|t|top|w|west)\\b\\s*",
+      "name": "support.constant.edge.pikchr"
+    },
+    "colorname": {
+      "patterns": [
+        {
+          "match": "(?i)\\b(aqua|black|blue|fuchsia|gray|green|lime|maroon|navy|olive|orange|purple|red|silver|teal|white|yellow)\\b",
+          "name": "support.constant.color.w3c-standard-color-name.pikchr"
+        },
+        {
+          "match": "(?i)\\b(aliceblue|antiquewhite|aquamarine|azure|beige|bisque|blanchedalmond|blueviolet|brown|burlywood|cadetblue|chartreuse|chocolate|coral|cornflowerblue|cornsilk|crimson|cyan|darkblue|darkcyan|darkgoldenrod|darkgray|darkgreen|darkgrey|darkkhaki|darkmagenta|darkolivegreen|darkorange|darkorchid|darkred|darksalmon|darkseagreen|darkslateblue|darkslategray|darkslategrey|darkturquoise|darkviolet|deeppink|deepskyblue|dimgray|dimgrey|dodgerblue|firebrick|floralwhite|forestgreen|gainsboro|ghostwhite|gold|goldenrod|greenyellow|grey|honeydew|hotpink|indianred|indigo|ivory|khaki|lavender|lavenderblush|lawngreen|lemonchiffon|lightblue|lightcoral|lightcyan|lightgoldenrodyellow|lightgray|lightgreen|lightgrey|lightpink|lightsalmon|lightseagreen|lightskyblue|lightslategray|lightslategrey|lightsteelblue|lightyellow|limegreen|linen|magenta|mediumaquamarine|mediumblue|mediumorchid|mediumpurple|mediumseagreen|mediumslateblue|mediumspringgreen|mediumturquoise|mediumvioletred|midnightblue|mintcream|mistyrose|moccasin|navajowhite|none|off|oldlace|olivedrab|orangered|orchid|palegoldenrod|palegreen|paleturquoise|palevioletred|papayawhip|peachpuff|peru|pink|plum|powderblue|rebeccapurple|rosybrown|royalblue|saddlebrown|salmon|sandybrown|seagreen|seashell|sienna|skyblue|slateblue|slategray|slategrey|snow|springgreen|steelblue|tan|thistle|tomato|turquoise|violet|wheat|whitesmoke|yellowgreen)\\b",
+          "name": "support.constant.color.w3c-extended-color-name.pikchr"
+        }
+      ]
+    },
+    "string": {
+      "begin": "\"",
+      "beginCaptures": {
+        "0": {
+          "name": "punctuation.definition.string.begin.pikchr"
+        }
+      },
+      "end": "(\")\\s*",
+      "endCaptures": {
+        "1": {
+          "name": "punctuation.definition.string.end.pikchr"
+        }
+      },
+      "name": "string.quoted.double.pikchr",
+      "patterns": [
+        {
+          "match": "\\\\\"",
+          "name": "constant.character.escape.pikchr"
+        },
+        {
+          "match": "\\\\.",
+          "name": "invalid.illegal.unrecognized-string-escape.pikchr"
+        }
+      ]
+    },
+    "direction": {
+      "match": "\\b(down|left|right|up)\\b\\s*",
+      "captures": {
+        "1": {
+          "name": "support.constant.direction.pikchr"
+        }
+      }
+    },
+    "go-until-even": {
+      "patterns": [
+        {
+          "match": "(\\bgo\\s+)?\\b(down|left|right|up)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "support.constant.direction.pikchr"
+            },
+            "2": {
+              "name": "support.constant.direction.pikchr"
+            }
+          }
+        },
+        {
+          "match": "\\b((?:until\\s+)?even\\s+with)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "constant.language.pikchr"
+            }
+          }
+        },
+        {
+          "include": "#position"
+        }
+      ]
+    },
+    "numproperty": {
+      "match": "\\b(diameter|ht|height|rad|radius|thickness|width|wid)\\b\\s+",
+      "captures": {
+        "1": {
+          "name": "support.constant.property-value.pikchr"
+        }
+      }
+    },
+    "lvalue": {
+      "patterns": [
+        {
+          "include": "#id-at-the-beggining"
+        }
+      ]
+    },
+    "id-at-the-beggining": {
+      "comment": "didn't find the rule exactly",
+      "match": "(?<=^\\s*)(\\$?[a-z]+)",
+      "captures": {
+        "1": {
+          "name": "variable.pikchr"
+        }
+      }
+    },
+    "id": {
+      "comment": "didn't find the rule exactly",
+      "match": "(?!\\b(?:then|from|at|diameter|ht|height|rad|radius|thickness|width|wid|with|dashed|dotted|fill|color|to|chop|even)\\b)(\\$?[a-zA-Z]+[a-zA-Z0-9_]*)\\s*",
+      "captures": {
+        "1": {
+          "name": "variable.language.pikchr"
+        }
+      }
+    },
+    "rvalue": {
+      "patterns": [
+        {
+          "include": "#expr"
+        },
+        {
+          "include": "#placename"
+        }
+      ]
+    },
+    "colorproperty-then-rvalue": {
+      "begin": "\\b(fill|color)\\b\\s*",
+      "beginCaptures": {
+        "1": {
+          "name": "keyword.pikchr"
+        }
+      },
+      "applyEndPatternLast": true,
+      "patterns": [
+        {
+          "include": "#rvalue"
+        }
+      ],
+      "end": "(?:)"
+    },
+    "position": {
+      "patterns": [
+        {
+          "include": "#place"
+        },
+        {
+          "match": "\\b(above|below|heading|way between|between|of the way between|and)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "keyword.pikchr"
+            }
+          }
+        },
+        {
+          "begin": "\\(\\s*",
+          "end": "\\)\\s*",
+          "beginCaptures": {
+            "0": {
+              "name": "punctuation.parenthesis.begin.pikchr"
+            }
+          },
+          "endCaptures": {
+            "0": {
+              "name": "punctuation.parenthesis.end.pikchr"
+            }
+          },
+          "patterns": [
+            {
+              "include": "#expr"
+            },
+            {
+              "include": "#position"
+            }
+          ]
+        },
+        {
+          "include": "#expr"
+        }
+      ]
+    },
+    "place": {
+      "patterns": [
+        {
+          "include": "#place2"
+        },
+        {
+          "include": "#edge"
+        },
+        {
+          "match": "\\b(of)\\b\\s*",
+          "captures": {
+            "1": {
+              "name": "keyword.control.of.pikchr"
+            }
+          }
+        }
+      ]
+    },
+    "place2": {
+      "patterns": [
+        {
+          "include": "#object"
+        },
+        {
+          "include": "#dot_e-edge"
+        },
+        {
+          "include": "#nth"
+        }
+      ]
+    },
+    "dot_e-edge": {
+      "match": "(\\.)(bot|bottom|c|center|e|east|end|left|n|ne|north|nw|right|s|se|south|start|sw|t|top|w|west)\\b\\s*",
+      "captures": {
+        "1": {
+          "name": "punctuation.separator.period.pikchr"
+        },
+        "2": {
+          "name": "entity.name.class.pikchr"
+        }
+      }
+    },
+    "whitespace": {
+      "comment": "match T_WHITESPACE as seen in pikchr.y",
+      "patterns": [
+        {
+          "match": " \\r\\n\\t\\f"
+        },
+        {
+          "begin": "/\\*",
+          "end": "\\*/",
+          "name": "comment.block.pikchr"
+        },
+        {
+          "match": "(?://|#).*$\\n?",
+          "name": "comment.line.pikchr"
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/pikchr/test/advanced.test.pikchr b/pikchr/test/advanced.test.pikchr
new file mode 100644
index 0000000..ea0b5e3
--- /dev/null
+++ b/pikchr/test/advanced.test.pikchr
@@ -0,0 +1,88 @@
+// SYNTAX TEST "source.pikchr" "long statements"
+
+line right even with $r left of X9 then up until even with VARIABLE.n
+// <---- storage.type.class.pikchr
+//   ^^^^^ support.constant.direction.pikchr
+//         ^^^^ constant.language.pikchr
+//              ^^^^ constant.language.pikchr
+//                   ^^ variable.language.pikchr
+//                      ^^^^ support.constant.direction.pikchr
+//                           ^^ keyword.control.of.pikchr
+//                              ^^ variable.language.pikchr
+//                                 ^^^^ keyword.pikchr
+//                                      ^^ support.constant.direction.pikchr
+//                                         ^^^^^^^^^^ constant.language.pikchr
+//                                                    ^^^^ constant.language.pikchr
+//                                                         ^^^^^^^^ variable.language.pikchr
+
+circle rad 0.05 at Paper + (-0.055, -0.25)
+// <------ storage.type.class.pikchr
+//     ^^^ support.constant.property-value.pikchr
+//         ^^^^ constant.numeric.pikchr
+//              ^^ keyword.pikchr
+//                 ^^^^^ variable.language.pikchr
+//                       ^ keyword.operator.arithmetic.pikchr
+//                         ^ punctuation.parenthesis.begin.pikchr
+//                          ^       ^ keyword.operator.arithmetic.pikchr
+//                           ^^^^^   ^^^^ constant.numeric.pikchr
+//                                       ^ punctuation.parenthesis.end.pikchr
+
+
+line thick  right from 0.3cm below start of previous
+// <---- storage.type.class.pikchr
+//   ^^^^^ entity.name.tag.pikchr
+//          ^^^^^ support.constant.direction.pikchr
+//                ^^^^ keyword.pikchr
+//                     ^^^^^ constant.numeric.pikchr
+//                        ^^ keyword.other.unit.cm.pikchr
+//                           ^^^^^ keyword.pikchr
+//                                 ^^^^^ support.constant.edge.pikchr
+//                                       ^^ keyword.control.of.pikchr
+//                                          ^^^^^^^^ entity.name.type
+
+oval width OVAL1.height height OVAL1.width
+// <---- storage.type.class.pikchr
+//   ^^^^^              ^^^^^^ support.constant.property-value.pikchr
+//         ^^^^^ variable.language.pikchr
+//              ^                   ^ punctuation.separator.period.pikchr
+//               ^^^^^^              ^^^^^ support.constant.property-value.pikchr
+
+oval "" fit at $r*1.2 below 1/2 way between X0 and X9
+// <---- storage.type.class.pikchr
+//   ^^ string.quoted.double.pikchr
+//      ^^^ entity.name.tag.pikchr
+//         ^ -entity.name.tag.pikchr
+//          ^^ keyword.pikchr
+//             ^^ variable.language.pikchr
+//               ^ keyword.operator.arithmetic.pikchr
+//                ^^^       ^ ^ constant.numeric.pikchr
+//                    ^^^^^ keyword.pikchr
+//                           ^ keyword.operator.arithmetic.pikchr
+//                              ^^^ ^^^^^^^ keyword.pikchr
+//                                          ^^     ^^ variable.language.pikchr
+//                                             ^^^ keyword.pikchr
+
+arrow from TYPENAME.e right even with ATTR
+// <----- storage.type.class.pikchr
+//    ^^^^ keyword.pikchr
+//         ^^^^^^^^                   ^^^^ variable.language.pikchr
+//                 ^ punctuation.separator.period.pikchr
+//                  ^ entity.name.class.pikchr
+//                    ^^^^^ support.constant.direction.pikchr
+//                          ^^^^ ^^^^ constant.language.pikchr
+
+box "expr" fit with .w at 1.75*$h below BTW.w
+// <--- storage.type.class.pikchr
+//  ^^^^^^ string.quoted.double.pikchr
+//         ^^^ entity.name.tag.pikchr
+//             ^^^^ constant.language.pikchr
+//                  ^ punctuation.separator.period.pikchr
+//                   ^ entity.name.class.pikchr
+//                     ^^ keyword.pikchr
+//                        ^^^^ constant.numeric.pikchr
+//                            ^ keyword.operator.arithmetic.pikchr
+//                             ^^ variable.language.pikchr
+//                                ^^^^^ keyword.pikchr
+//                                      ^^^ variable.language.pikchr
+//                                         ^ punctuation.separator.period.pikchr
+//                                          ^ entity.name.class.pikchr
diff --git a/pikchr/test/attribute.test.pikchr b/pikchr/test/attribute.test.pikchr
new file mode 100644
index 0000000..c981ce4
--- /dev/null
+++ b/pikchr/test/attribute.test.pikchr
@@ -0,0 +1,13 @@
+// SYNTAX TEST "source.pikchr" "checks for 'attribute' tree"
+
+arrow from C6 to C3P chop
+//    ^^^^ keyword.pikchr
+//         ^^    ^^^  variable.language.pikchr
+//            ^^ keyword.pikchr
+//                   ^^^^ entity.name.tag.pikchr
+
+arrow right then down
+//    ^^^^^ support.constant.direction.pikchr
+//          ^^^^ keyword.pikchr
+//              ^ -keyword.pikchr
+//               ^^^^  support.constant.direction.pikchr
diff --git a/pikchr/test/boolproperty.test.pikchr b/pikchr/test/boolproperty.test.pikchr
new file mode 100644
index 0000000..828d5d6
--- /dev/null
+++ b/pikchr/test/boolproperty.test.pikchr
@@ -0,0 +1,40 @@
+// SYNTAX TEST "source.pikchr" "Properties with no argument"
+
+arrow cw
+//    ^ source.pikchr entity.name.tag.pikchr
+
+box ccw
+//  ^ source.pikchr entity.name.tag.pikchr
+
+box <-
+//  ^^ source.pikchr entity.name.tag.pikchr
+
+box ->
+//  ^^ source.pikchr entity.name.tag.pikchr
+
+box <->
+//  ^^^ source.pikchr entity.name.tag.pikchr
+
+arrow invis
+//    ^^^^^ source.pikchr entity.name.tag.pikchr
+
+box invisible
+//  ^^^^^^^^^ source.pikchr entity.name.tag.pikchr
+
+box thick
+//  ^ source.pikchr entity.name.tag.pikchr
+
+box thin
+//  ^ source.pikchr entity.name.tag.pikchr
+
+arrow solid
+//    ^ source.pikchr entity.name.tag.pikchr
+
+cylinder same
+// <-------- storage.type.class.pikchr
+//      ^ source.pikchr
+//       ^^^^ source.pikchr entity.name.tag.pikchr
+
+box same;
+// <--- storage.type.class.pikchr
+//  ^^^^ source.pikchr entity.name.tag.pikchr
diff --git a/pikchr/test/color.test.pikchr b/pikchr/test/color.test.pikchr
new file mode 100644
index 0000000..d9dca92
--- /dev/null
+++ b/pikchr/test/color.test.pikchr
@@ -0,0 +1,458 @@
+// SYNTAX TEST "source.pikchr" "everything related to setting a color"
+
+box fill Red
+// <--- storage.type.class.pikchr
+// ^ source.pikchr
+//  ^^^^ keyword.pikchr
+//      ^ -keyword.pikchr
+//       ^^^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill aqua
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill black
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill blue
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill gray
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill green
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill lime
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill maroon
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill navy
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill olive
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill orange
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill purple
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill red
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill silver
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill teal
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill white
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box fill yellow
+//       ^ support.constant.color.w3c-standard-color-name.pikchr
+
+box color AliceBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color AntiqueWhite
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Aquamarine
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Azure
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Beige
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Bisque
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color BlanchedAlmond
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color BlueViolet
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Brown
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color BurlyWood
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color CadetBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Chartreuse
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Chocolate
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Coral
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color CornflowerBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Cornsilk
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Crimson
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Cyan
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkCyan
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkGoldenrod
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkGray
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkGrey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkKhaki
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkMagenta
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkOliveGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkOrange
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkOrchid
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkRed
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkSalmon
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkSeaGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkSlateBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkSlateGray
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkSlateGrey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkTurquoise
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DarkViolet
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DeepPink
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DeepSkyBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DimGray
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DimGrey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color DodgerBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Firebrick
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color FloralWhite
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color ForestGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Gainsboro
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color GhostWhite
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Gold
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Goldenrod
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color GreenYellow
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Grey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Honeydew
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color HotPink
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color IndianRed
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Indigo
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Ivory
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Khaki
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Lavender
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LavenderBlush
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LawnGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LemonChiffon
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightCoral
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightCyan
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightGoldenrodYellow
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightGray
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightGrey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightPink
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightSalmon
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightSeaGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightSkyBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightSlateGray
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightSlateGrey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightSteelBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LightYellow
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color LimeGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Linen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Magenta
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumAquamarine
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumOrchid
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumPurple
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumSeaGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumSlateBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumSpringGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumTurquoise
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MediumVioletRed
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MidnightBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MintCream
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color MistyRose
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Moccasin
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color NavajoWhite
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color None  /* Non-standard addition */
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Off  /* Non-standard addition */
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color OldLace
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color OliveDrab
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color OrangeRed
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Orchid
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PaleGoldenrod
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PaleGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PaleTurquoise
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PaleVioletRed
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PapayaWhip
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PeachPuff
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Peru
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Pink
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Plum
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color PowderBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color RebeccaPurple
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color RosyBrown
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color RoyalBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SaddleBrown
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Salmon
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SandyBrown
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SeaGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Seashell
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Sienna
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SkyBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SlateBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SlateGray
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SlateGrey
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Snow
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SpringGreen
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color SteelBlue
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Tan
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Thistle
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Tomato
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Turquoise
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Violet
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color Wheat
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color WhiteSmoke
+//        ^ support.constant.color.w3c-extended-color-name.pikchr
+
+box color YellowGreen
+//        ^^^^^^^^^^^ support.constant.color.w3c-extended-color-name.pikchr
+
+circle fill 0xffff00
+//          ^^^^^^^^ constant.numeric.pikchr
\ No newline at end of file
diff --git a/pikchr/test/homepage.example.test.pikchr b/pikchr/test/homepage.example.test.pikchr
new file mode 100644
index 0000000..1bde67d
--- /dev/null
+++ b/pikchr/test/homepage.example.test.pikchr
@@ -0,0 +1,39 @@
+// SYNTAX TEST "source.pikchr" "https://pikchr.org/home/doc/trunk/homepage.md"
+
+arrow right 200% "Markdown" "Source"
+// <----- storage.type.class.pikchr
+//   ^ source.pikchr
+//    ^ source.pikchr
+//          ^ source.pikchr constant.numeric.pikchr
+//               ^ source.pikchr string.quoted.double.pikchr
+//                         ^ source.pikchr
+//                          ^ source.pikchr string.quoted.double.pikchr
+
+box rad 10px "Markdown" "Formatter" "(markdown.c)" fit
+// <--- storage.type.class.pikchr
+// ^ -storage.type.class.pikchr
+//  ^^^ support.constant.property-value.pikchr
+//     ^ source.pikchr
+//      ^^^^ source.pikchr constant.numeric.pikchr
+//           ^ source.pikchr
+//            ^ source.pikchr string.quoted.double.pikchr
+//                      ^ source.pikchr
+//                       ^ source.pikchr string.quoted.double.pikchr
+//                                  ^ source.pikchr
+//                                   ^ source.pikchr string.quoted.double.pikchr
+//                                                ^ source.pikchr
+//                                                 ^ source.pikchr entity.name.tag.pikchr
+
+arrow <-> down 70% from last box.s
+// <--- storage.type.class.pikchr
+//   ^ source.pikchr
+//    ^^^ source.pikchr entity.name.tag.pikchr
+//        ^^^^ support.constant.direction.pikchr
+//             ^^ constant.numeric.pikchr
+//               ^ keyword.other.unit.percentage.pikchr
+//                ^ source.pikchr
+//                 ^^^^ keyword.pikchr
+//                      ^^^^ entity.name.type
+//                           ^^^ keyword.pikchr
+//                              ^ punctuation.separator.period.pikchr
+//                               ^ entity.name.class.pikchr
diff --git a/pikchr/test/nth.test.pikchr b/pikchr/test/nth.test.pikchr
new file mode 100644
index 0000000..93a8fd2
--- /dev/null
+++ b/pikchr/test/nth.test.pikchr
@@ -0,0 +1,33 @@
+// SYNTAX TEST "source.pikchr" "all checks for 'nth' tree"
+
+<
+< all checks are `attribute -> at -> position -> place -> place2 -> nth -> ...`
+<
+
+<
+< `nth -> NTH -> classname`
+<
+box at 1st box
+//  ^^ keyword.pikchr
+//     ^^^ constant.language.pikchr
+//         ^^^ keyword.pikchr
+
+<
+< `nth -> NTH -> last|previous -> classname`
+<
+box at 2nd previous box
+//  ^^ keyword.pikchr
+//     ^^^ constant.language.pikchr
+//         ^^^^^^^^ entity.name.type
+//                  ^^^ keyword.pikchr
+
+<
+< `nth -> last|previous -> classname
+<
+
+box at last box
+//  ^^ keyword.pikchr
+//     ^^^^ entity.name.type
+//          ^^^ keyword.pikchr
+box at previous box
+//     ^^^^^^^^ entity.name.type
diff --git a/pikchr/test/place.test.pikchr b/pikchr/test/place.test.pikchr
new file mode 100644
index 0000000..8fca197
--- /dev/null
+++ b/pikchr/test/place.test.pikchr
@@ -0,0 +1,16 @@
+// SYNTAX TEST "source.pikchr" "place node"
+
+arrow from last dot to X0
+//    ^^^^ keyword.pikchr
+//         ^^^^ entity.name.type
+//              ^^^ keyword.pikchr
+//                  ^^ keyword.pikchr
+//                     ^^ variable.language.pikchr
+
+circle at end of first arrow
+//     ^^ keyword.pikchr
+//        ^^^ support.constant.edge.pikchr
+//            ^^ keyword.control.of.pikchr
+//              ^ -keyword.control.of.pikchr
+//               ^^^^^ constant.language.pikchr
+//                     ^^^^^ keyword.pikchr
diff --git a/pikchr/test/position.test.pikchr b/pikchr/test/position.test.pikchr
new file mode 100644
index 0000000..59679ef
--- /dev/null
+++ b/pikchr/test/position.test.pikchr
@@ -0,0 +1,38 @@
+// SYNTAX TEST "source.pikchr" "all checks for 'position' tree"
+
+<
+< test for `position -> expr -> ',' -> expr`
+<
+box at 1 , 1
+//  ^^ keyword.pikchr
+//     ^   ^ constant.numeric.pikchr
+//       ^ punctuation.separator.pikchr
+
+<
+< `position -> place`
+<
+box at 1st box
+//  ^^ keyword.pikchr
+//     ^^^ constant.language.pikchr
+//         ^^^ keyword.pikchr
+
+<
+< `position -> place -> + -> expr -> ',' -> expr`
+<
+box at 3rd box + 0.1,9.3
+//  ^^ keyword.pikchr
+//     ^^^ constant.language.pikchr
+//         ^^^ keyword.pikchr
+//             ^ keyword.operator.arithmetic.pikchr
+//               ^^^ ^^^ constant.numeric.pikchr
+//                  ^ punctuation.separator.pikchr
+
+<
+< `position -> ( -> position -> )`
+<
+circle at (-0.055, -0.25)
+//     ^^ keyword.pikchr
+//        ^ punctuation.parenthesis.begin.pikchr
+//         ^       ^ keyword.operator.arithmetic.pikchr
+//          ^^^^^   ^^^^ constant.numeric.pikchr
+//                      ^ punctuation.parenthesis.end.pikchr
diff --git a/pikchr/test/statements.test.pikchr b/pikchr/test/statements.test.pikchr
new file mode 100644
index 0000000..c96d341
--- /dev/null
+++ b/pikchr/test/statements.test.pikchr
@@ -0,0 +1,93 @@
+// SYNTAX TEST "source.pikchr" "first test"
+
+box
+// <--- storage.type.class.pikchr
+
+cylinder  ;
+// <--------  storage.type.class.pikchr
+//      ^  source.pikchr
+
+
+cylinder;
+// <--- storage.type.class.pikchr
+//      ^ source.pikchr punctuation.separator.delimiter.end.pikchr
+
+cylinder;box
+// <--- storage.type.class.pikchr
+//      ^ source.pikchr punctuation.separator.delimiter.end.pikchr
+//       ^ storage.type.class.pikchr
+
+
+cylinder  ;  box
+// <--- storage.type.class.pikchr
+//      ^ source.pikchr
+//        ^ source.pikchr punctuation.separator.delimiter.end.pikchr
+//         ^ source.pikchr
+//           ^ storage.type.class.pikchr
+
+arrow right
+// <--- storage.type.class.pikchr
+//   ^ -storage.type.class.pikchr
+//    ^^^^^ support.constant.direction.pikchr
+
+diamond "hi"
+// <--- storage.type.class.pikchr
+//      ^^^^ string.quoted.double.pikchr
+
+
+Cat: box "box"
+// <--- variable.language.pikchr
+// ^ punctuation.separator.pikchr
+//   ^^^ storage.type.class.pikchr
+//       ^^^^^ string.quoted.double.pikchr
+
+box "hello, \"world\""
+//  ^^^^^^^^^^^^^^^^^^ string.quoted.double.pikchr
+
+box "hello, \x"
+//  ^^^^^^^^^^^ source.pikchr string.quoted.double.pikchr
+//          ^^ invalid.illegal.unrecognized-string-escape.pikchr
+
+linewid = 0.25
+// <--- variable.pikchr
+//      ^ keyword.operator.assignment.pikchr
+//        ^^^^ constant.numeric.pikchr
+
+$r = 0.2in
+// <-- variable.pikchr
+// ^ keyword.operator.assignment.pikchr
+//   ^^^^^ constant.numeric.pikchr
+//      ^^ keyword.other.unit.in.pikchr
+
+linerad = 0.75*$r
+// <------- variable.pikchr
+//     ^ -variable.pikchr
+//      ^ keyword.operator.assignment.pikchr
+//        ^^^^ constant.numeric.pikchr
+//            ^ keyword.operator.arithmetic.pikchr
+//             ^^ variable.language.pikchr
+
+boxht = .2; boxwid = .3; circlerad = .3; dx = 0.05
+// <----- variable.pikchr
+//          ^^^^^^       ^^^^^^^^^       ^^ variable.language.pikchr
+//    ^            ^               ^        ^ keyword.operator.assignment.pikchr
+//      ^^           ^^              ^^       ^^^^ constant.numeric.pikchr
+//        ^            ^               ^ punctuation.separator.delimiter.end.pikchr
+
+left
+// <- support.constant.direction.pikchr
+
+define par {}
+// <------ keyword.control.directive.define.pikchr
+//     ^^^ variable.language.pikchr
+//         ^ punctuation.section.block.begin.bracket.curly.pikchr
+//          ^ punctuation.section.block.end.bracket.curly.pikchr
+
+line dashed
+//   ^^^^^^ entity.name.tag.pikchr
+
+line dotted
+//   ^^^^^^ entity.name.tag.pikchr
+
+"splines"
+// <--------- string.quoted.double.pikchr
diff --git a/pikchr/test/textposition.test.pikchr b/pikchr/test/textposition.test.pikchr
new file mode 100644
index 0000000..6ba6dce
--- /dev/null
+++ b/pikchr/test/textposition.test.pikchr
@@ -0,0 +1,40 @@
+// SYNTAX TEST "source.pikchr" "everything related to using text"
+
+box "" above
+//     ^^^^^ constant.other.pikchr
+
+box "" aligned
+//     ^^^^^^^ constant.other.pikchr
+
+box "" below
+//     ^^^^^ constant.other.pikchr
+
+box "" big
+//     ^^^ constant.other.pikchr
+
+box "" bold
+//     ^^^^ constant.other.pikchr
+
+box "" mono
+//     ^^^^ constant.other.pikchr
+
+box "" monospace
+//     ^^^^^^^^^ constant.other.pikchr
+
+box "" center
+//     ^^^^^^ constant.other.pikchr
+
+box "" italic
+//     ^^^^^^ constant.other.pikchr
+
+box "" ljust
+//     ^^^^^ constant.other.pikchr
+
+box "" rjust
+//     ^^^^^ constant.other.pikchr
+
+box "" small
+//     ^^^^^ constant.other.pikchr
+
+box "" small bold
+//     ^^^^^ ^^^^ constant.other.pikchr