diff --git a/src/Tools/VSCode/extension/package.json b/src/Tools/VSCode/extension/package.json
--- a/src/Tools/VSCode/extension/package.json
+++ b/src/Tools/VSCode/extension/package.json
@@ -1,297 +1,297 @@
 {
     "name": "Isabelle2021",
     "displayName": "Isabelle2021",
     "description": "Isabelle Prover IDE",
     "keywords": [
         "theorem prover",
         "formalized mathematics",
         "mathematical logic",
         "functional programming",
         "document preparation"
     ],
     "icon": "isabelle.png",
     "version": "1.2.2",
     "publisher": "makarius",
     "license": "MIT",
     "repository": {
         "url": "https://isabelle-dev.sketis.net"
     },
     "engines": {
         "vscode": "^1.32.0"
     },
     "categories": [
         "Programming Languages"
     ],
     "activationEvents": [
         "onLanguage:isabelle",
         "onLanguage:isabelle-ml",
         "onLanguage:bibtex",
         "onCommand:isabelle.preview",
         "onCommand:isabelle.preview-split"
     ],
     "main": "./out/src/extension",
     "contributes": {
         "commands": [
             {
                 "command": "isabelle.state",
                 "title": "Show State",
                 "category": "Isabelle"
             },
             {
                 "command": "isabelle.preview",
                 "title": "Open Preview",
                 "category": "Isabelle",
                 "icon": {
                     "light": "./media/Preview.svg",
                     "dark": "./media/Preview_inverse.svg"
                 }
             },
             {
                 "command": "isabelle.preview-split",
                 "title": "Open Preview (Split Editor)",
                 "category": "Isabelle",
                 "icon": {
                     "light": "./media/PreviewOnRightPane_16x.svg",
                     "dark": "./media/PreviewOnRightPane_16x_dark.svg"
                 }
             },
             {
                 "command": "isabelle.include-word",
                 "title": "Include word",
                 "category": "Isabelle"
             },
             {
                 "command": "isabelle.include-word-permanently",
                 "title": "Include word permanently",
                 "category": "Isabelle"
             },
             {
                 "command": "isabelle.exclude-word",
                 "title": "Exclude word",
                 "category": "Isabelle"
             },
             {
                 "command": "isabelle.exclude-word-permanently",
                 "title": "Exclude word permanently",
                 "category": "Isabelle"
             },
             {
                 "command": "isabelle.reset-words",
                 "title": "Reset non-permanent words",
                 "category": "Isabelle"
             }
         ],
         "menus": {
             "editor/title": [
                 {
                     "when": "editorLangId == isabelle",
                     "command": "isabelle.preview",
                     "group": "navigation"
                 },
                 {
                     "when": "editorLangId == isabelle-ml",
                     "command": "isabelle.preview",
                     "group": "navigation"
                 },
                 {
                     "when": "editorLangId == bibtex",
                     "command": "isabelle.preview",
                     "group": "navigation"
                 },
                 {
                     "when": "editorLangId == isabelle",
                     "command": "isabelle.preview-split",
                     "group": "navigation"
                 },
                 {
                     "when": "editorLangId == isabelle-ml",
                     "command": "isabelle.preview-split",
                     "group": "navigation"
                 },
                 {
                     "when": "editorLangId == bibtex",
                     "command": "isabelle.preview-split",
                     "group": "navigation"
                 }
             ],
             "explorer/context": [
                 {
                     "when": "resourceLangId == isabelle",
                     "command": "isabelle.preview",
                     "group": "navigation"
                 },
                 {
                     "when": "resourceLangId == isabelle-ml",
                     "command": "isabelle.preview",
                     "group": "navigation"
                 },
                 {
                     "when": "resourceLangId == bibtex",
                     "command": "isabelle.preview",
                     "group": "navigation"
                 }
             ]
         },
         "languages": [
             {
                 "id": "isabelle",
                 "aliases": [
                     "Isabelle"
                 ],
                 "extensions": [
                     ".thy"
                 ],
                 "configuration": "./isabelle-language.json"
             },
             {
                 "id": "isabelle-ml",
                 "aliases": [
                     "Isabelle/ML"
                 ],
                 "extensions": [
                     ".ML",
                     ".sml",
                     ".sig"
                 ],
                 "configuration": "./isabelle-ml-language.json"
             }
         ],
         "grammars": [
             {
                 "language": "isabelle",
                 "scopeName": "source.isabelle",
                 "path": "./isabelle-grammar.json"
             },
             {
                 "language": "isabelle-ml",
                 "scopeName": "source.isabelle-ml",
                 "path": "./isabelle-ml-grammar.json"
             }
         ],
         "configuration": {
             "title": "Isabelle",
             "properties": {
                 "isabelle.home": {
                     "type": "string",
                     "default": "",
                     "description": "Main Isabelle directory (ISABELLE_HOME)."
                 },
                 "isabelle.args": {
                     "type": "array",
                     "items": {
                         "type": "string"
                     },
                     "default": [],
                     "description": "Command-line arguments for isabelle vscode_server process."
                 },
                 "isabelle.cygwin_root": {
                     "type": "string",
                     "default": "",
                     "description": "Cygwin installation on Windows (only relevant when running directly from the Isabelle repository)."
                 },
                 "isabelle.unprocessed_light_color": { "type": "string", "default": "rgba(255, 160, 160, 1.00)" },
                 "isabelle.unprocessed_dark_color": { "type": "string", "default": "rgba(97, 0, 97, 1.00)" },
                 "isabelle.unprocessed1_light_color": { "type": "string", "default": "rgba(255, 160, 160, 0.20)" },
                 "isabelle.unprocessed1_dark_color": { "type": "string", "default": "rgba(97, 0, 97, 0.20)" },
                 "isabelle.running_light_color": { "type": "string", "default": "rgba(97, 0, 97, 1.00)" },
                 "isabelle.running_dark_color": { "type": "string", "default": "rgba(255, 160, 160, 1.00)" },
                 "isabelle.running1_light_color": { "type": "string", "default": "rgba(97, 0, 97, 0.40)" },
                 "isabelle.running1_dark_color": { "type": "string", "default": "rgba(255, 160, 160, 0.40)" },
                 "isabelle.canceled_light_color": { "type": "string", "default": "rgba(255, 106, 106, 0.40)" },
                 "isabelle.canceled_dark_color": { "type": "string", "default": "rgba(255, 106, 106, 0.40)" },
                 "isabelle.bad_light_color": { "type": "string", "default": "rgba(255, 106, 106, 0.40)" },
                 "isabelle.bad_dark_color": { "type": "string", "default": "rgba(255, 106, 106, 0.40)" },
                 "isabelle.intensify_light_color": { "type": "string", "default": "rgba(255, 204, 102, 0.40)" },
                 "isabelle.intensify_dark_color": { "type": "string", "default": "rgba(204, 136, 0, 0.20)" },
                 "isabelle.markdown_bullet1_light_color": { "type": "string", "default": "rgba(218, 254, 218, 1.00)" },
                 "isabelle.markdown_bullet1_dark_color": { "type": "string", "default": "rgba(5, 199, 5, 0.20)" },
                 "isabelle.markdown_bullet2_light_color": { "type": "string", "default": "rgba(255, 240, 204, 1.00)" },
                 "isabelle.markdown_bullet2_dark_color": { "type": "string", "default": "rgba(204, 143, 0, 0.20)" },
                 "isabelle.markdown_bullet3_light_color": { "type": "string", "default": "rgba(231, 231, 255, 1.00)" },
                 "isabelle.markdown_bullet3_dark_color": { "type": "string", "default": "rgba(0, 0, 204, 0.20)" },
                 "isabelle.markdown_bullet4_light_color": { "type": "string", "default": "rgba(255, 224, 240, 1.00)" },
                 "isabelle.markdown_bullet4_dark_color": { "type": "string", "default": "rgba(204, 0, 105, 0.20)" },
                 "isabelle.quoted_light_color": { "type": "string", "default": "rgba(139, 139, 139, 0.10)" },
                 "isabelle.quoted_dark_color": { "type": "string", "default": "rgba(150, 150, 150, 0.15)" },
                 "isabelle.antiquoted_light_color": { "type": "string", "default": "rgba(255, 200, 50, 0.10)" },
                 "isabelle.antiquoted_dark_color": { "type": "string", "default": "rgba(255, 214, 102, 0.15)" },
                 "isabelle.writeln_light_color": { "type": "string", "default": "rgba(192, 192, 192, 1.0)" },
                 "isabelle.writeln_dark_color": { "type": "string", "default": "rgba(192, 192, 192, 1.0)" },
                 "isabelle.information_light_color": { "type": "string", "default": "rgba(193, 223, 238, 1.0)" },
                 "isabelle.information_dark_color": { "type": "string", "default": "rgba(193, 223, 238, 1.0)" },
                 "isabelle.warning_light_color": { "type": "string", "default": "rgba(255, 140, 0, 1.0)" },
                 "isabelle.warning_dark_color": { "type": "string", "default": "rgba(255, 140, 0, 1.0)" },
                 "isabelle.error_light_color": { "type": "string", "default": "rgba(178, 34, 34, 1.00)" },
                 "isabelle.error_dark_color": { "type": "string", "default": "rgba(178, 34, 34, 1.00)" },
                 "isabelle.spell_checker_light_color": { "type": "string", "default": "rgba(0, 0, 255, 1.0)" },
                 "isabelle.spell_checker_dark_color": { "type": "string", "default": "rgba(86, 156, 214, 1.00)" },
                 "isabelle.main_light_color": { "type": "string", "default": "rgba(0, 0, 0, 1.00)" },
                 "isabelle.main_dark_color": { "type": "string", "default": "rgba(212, 212, 212, 1.00)" },
                 "isabelle.keyword1_light_color": { "type": "string", "default": "rgba(175, 0, 219, 1.00)" },
                 "isabelle.keyword1_dark_color": { "type": "string", "default": "rgba(197, 134, 192, 1.00)" },
                 "isabelle.keyword2_light_color": { "type": "string", "default": "rgba(9, 136, 90, 1.00)" },
                 "isabelle.keyword2_dark_color": { "type": "string", "default": "rgba(181, 206, 168, 1.00)" },
                 "isabelle.keyword3_light_color": { "type": "string", "default": "rgba(38, 127, 153, 1.00)" },
                 "isabelle.keyword3_dark_color": { "type": "string", "default": "rgba(78, 201, 176), 1.00)" },
                 "isabelle.quasi_keyword_light_color": { "type": "string", "default": "rgba(153, 102, 255, 1.00)" },
                 "isabelle.quasi_keyword_dark_color": { "type": "string", "default": "rgba(153, 102, 255, 1.00)" },
                 "isabelle.improper_light_color": { "type": "string", "default": "rgba(205, 49, 49, 1.00)" },
                 "isabelle.improper_dark_color": { "type": "string", "default": "rgba(244, 71, 71, 1.00)" },
                 "isabelle.operator_light_color": { "type": "string", "default": "rgba(50, 50, 50, 1.00)" },
                 "isabelle.operator_dark_color": { "type": "string", "default": "rgba(212, 212, 212, 1.00)" },
                 "isabelle.tfree_light_color": { "type": "string", "default": "rgba(160, 32, 240, 1.00)" },
                 "isabelle.tfree_dark_color": { "type": "string", "default": "rgba(160, 32, 240, 1.00)" },
                 "isabelle.tvar_light_color": { "type": "string", "default": "rgba(160, 32, 240, 1.00)" },
                 "isabelle.tvar_dark_color": { "type": "string", "default": "rgba(160, 32, 240, 1.00)" },
                 "isabelle.free_light_color": { "type": "string", "default": "rgba(0, 0, 255, 1.00)" },
                 "isabelle.free_dark_color": { "type": "string", "default": "rgba(86, 156, 214, 1.00)" },
                 "isabelle.skolem_light_color": { "type": "string", "default": "rgba(210, 105, 30, 1.00)" },
                 "isabelle.skolem_dark_color": { "type": "string", "default": "rgba(210, 105, 30, 1.00)" },
                 "isabelle.bound_light_color": { "type": "string", "default": "rgba(0, 128, 0, 1.00)" },
                 "isabelle.bound_dark_color": { "type": "string", "default": "rgba(96, 139, 78, 1.00)" },
                 "isabelle.var_light_color": { "type": "string", "default": "rgba(0, 16, 128, 1.00)" },
                 "isabelle.var_dark_color": { "type": "string", "default": "rgba(156, 220, 254, 1.00)" },
                 "isabelle.inner_numeral_light_color": { "type": "string", "default": "rgba(9, 136, 90, 1.00)" },
                 "isabelle.inner_numeral_dark_color": { "type": "string", "default": "rgba(181, 206, 168, 1.00)" },
                 "isabelle.inner_quoted_light_color": { "type": "string", "default": "rgba(163, 21, 21, 1.00)" },
                 "isabelle.inner_quoted_dark_color": { "type": "string", "default": "rgba(206, 145, 120, 1.00)" },
                 "isabelle.inner_cartouche_light_color": { "type": "string", "default": "rgba(129, 31, 63, 1.00)" },
                 "isabelle.inner_cartouche_dark_color": { "type": "string", "default": "rgba(209, 105, 105, 1.00)" },
                 "isabelle.inner_comment_light_color": { "type": "string", "default": "rgba(0, 128, 0, 1.00)" },
                 "isabelle.inner_comment_dark_color": { "type": "string", "default": "rgba(96, 139, 78, 1.00)" },
                 "isabelle.comment1_light_color": { "type": "string", "default": "rgba(129, 31, 63, 1.00)" },
                 "isabelle.comment1_dark_color": { "type": "string", "default": "rgba(100, 102, 149, 1.00)" },
                 "isabelle.comment2_light_color": { "type": "string", "default": "rgba(209, 105, 105, 1.00)" },
                 "isabelle.comment2_dark_color": { "type": "string", "default": "rgba(206, 155, 120, 1.00)" },
                 "isabelle.comment3_light_color": { "type": "string", "default": "rgba(0, 128, 0, 1.00)" },
                 "isabelle.comment3_dark_color": { "type": "string", "default": "rgba(96, 139, 78, 1.00)" },
                 "isabelle.dynamic_light_color": { "type": "string", "default": "rgba(121, 94, 38, 1.00)" },
                 "isabelle.dynamic_dark_color": { "type": "string", "default": "rgba(220, 220, 170, 1.00)" },
                 "isabelle.class_parameter_light_color": { "type": "string", "default": "rgba(210, 105, 30, 1.00)" },
                 "isabelle.class_parameter_dark_color": { "type": "string", "default": "rgba(210, 105, 30, 1.00)" },
                 "isabelle.antiquote_light_color": { "type": "string", "default": "rgba(102, 0, 204, 1.00)" },
                 "isabelle.antiquote_dark_color": { "type": "string", "default": "rgba(197, 134, 192, 1.00)" },
                 "isabelle.raw_text_light_color": { "type": "string", "default": "rgba(102, 0, 204, 1.00)" },
                 "isabelle.raw_text_dark_color": { "type": "string", "default": "rgba(197, 134, 192, 1.00)" },
                 "isabelle.plain_text_light_color": { "type": "string", "default": "rgba(102, 0, 204, 1.00)" },
                 "isabelle.plain_text_dark_color": { "type": "string", "default": "rgba(197, 134, 192, 1.00)" }
             }
         }
     },
     "scripts": {
         "vscode:prepublish": "tsc -p ./",
         "compile": "tsc -watch -p ./",
         "postinstall": "node ./node_modules/vscode/bin/install"
     },
     "devDependencies": {
         "@types/mocha": "^2.2.48",
-        "@types/node": "^7.0.66",
+        "@types/node": "^7.10.14",
         "mocha": "^3.5.3",
         "typescript": "^2.9.2",
         "vscode": "^1.1.36"
     },
     "dependencies": {
         "vscode-languageclient": "~3.2.2",
         "vscode-languageserver-types": "~3.14.0"
     }
 }