diff --git a/rsconcept/frontend/src/components/RSInput/bracketMatching.ts b/rsconcept/frontend/src/components/RSInput/bracketMatching.ts
index eab93330..36003ffa 100644
--- a/rsconcept/frontend/src/components/RSInput/bracketMatching.ts
+++ b/rsconcept/frontend/src/components/RSInput/bracketMatching.ts
@@ -1,30 +1,45 @@
 import { bracketMatching, MatchResult } from '@codemirror/language';
 import { Decoration, EditorView } from '@codemirror/view';
 
-const matchingMark = Decoration.mark({class: "cc-matchingBracket"}),
-      nonmatchingMark = Decoration.mark({class: "cc-nonmatchingBracket"})
+const matchingMark = Decoration.mark({class: "cc-matchingBracket"});
+const nonmatchingMark = Decoration.mark({class: "cc-nonmatchingBracket"});
 
 function bracketRender(match: MatchResult) {
-  const decorations = []
-  const mark = match.matched ? matchingMark : nonmatchingMark
-  decorations.push(mark.range(match.start.from, match.start.to))
-  if (match.end) decorations.push(mark.range(match.end.from, match.end.to))
-  return decorations
+  const decorations = [];
+  const mark = match.matched ? matchingMark : nonmatchingMark;
+  decorations.push(mark.range(match.start.from, match.start.to));
+  if (match.end) {
+    decorations.push(mark.range(match.end.from, match.end.to));
+  }
+  return decorations;
 }
 
-export function ccBracketMatching(darkMode: boolean) {
-  const bracketTheme = EditorView.baseTheme({
-    '.cc-matchingBracket': {
-      fontWeight: 600,
-    },
-    '.cc-nonmatchingBracket': {
-      color: '#ef4444',
-      fontWeight: 700,
-    },
-    '&.cm-focused .cc-matchingBracket': {
-      backgroundColor: darkMode ? '#734f00' : '#dae6f2',
-    },
-  });
+const darkTheme = EditorView.baseTheme({
+  '.cc-matchingBracket': {
+    fontWeight: 600,
+  },
+  '.cc-nonmatchingBracket': {
+    color: '#ef4444',
+    fontWeight: 700,
+  },
+  '&.cm-focused .cc-matchingBracket': {
+    backgroundColor: '#734f00',
+  },
+});
 
-  return [bracketMatching({ renderMatch: bracketRender }), bracketTheme];
+const lightTheme = EditorView.baseTheme({
+  '.cc-matchingBracket': {
+    fontWeight: 600,
+  },
+  '.cc-nonmatchingBracket': {
+    color: '#ef4444',
+    fontWeight: 700,
+  },
+  '&.cm-focused .cc-matchingBracket': {
+    backgroundColor: '#dae6f2',
+  },
+});
+
+export function ccBracketMatching(darkMode: boolean) {
+  return [bracketMatching({ renderMatch: bracketRender }), darkMode ? darkTheme : lightTheme];
 }
\ No newline at end of file
diff --git a/rsconcept/frontend/src/components/RSInput/index.tsx b/rsconcept/frontend/src/components/RSInput/index.tsx
index ff39afd2..c6af7c74 100644
--- a/rsconcept/frontend/src/components/RSInput/index.tsx
+++ b/rsconcept/frontend/src/components/RSInput/index.tsx
@@ -6,10 +6,11 @@ import CodeMirror, { BasicSetupOptions, ReactCodeMirrorProps, ReactCodeMirrorRef
 import { EditorView } from 'codemirror';
 import { Ref, useMemo } from 'react';
 
+import { useRSForm } from '../../context/RSFormContext';
 import { useConceptTheme } from '../../context/ThemeContext';
 import { ccBracketMatching } from './bracketMatching';
 import { RSLanguage } from './rslang';
-//import { cursorTooltip } from './tooltip';
+import { rshoverTooltip } from './tooltip';
 
 const editorSetup: BasicSetupOptions = {
   highlightSpecialChars: false,
@@ -51,6 +52,7 @@ function RSInput({
   ...props 
 }: RSInputProps) {
   const { darkMode } = useConceptTheme();
+  const { schema } = useRSForm();
 
   const cursor = useMemo(() => editable ? 'cursor-text': 'cursor-default', [editable]);
   const lightTheme: Extension = useMemo(
@@ -64,7 +66,7 @@ function RSInput({
       caret: '#5d00ff',
     },
     styles: [
-      { tag: t.name, class: 'text-[#b266ff]' }, // GlobalID
+      { tag: t.name, class: 'text-[#b266ff] cursor-default' }, // GlobalID
       { tag: t.variableName, class: 'text-[#24821a]' }, // LocalID
       { tag: t.propertyName, class: '' }, // Radical
       { tag: t.keyword, class: 'text-[#001aff]' }, // keywords
@@ -85,7 +87,7 @@ function RSInput({
       caret: '#ffaa00'
     },
     styles: [
-      { tag: t.name, class: 'text-[#dfbfff]' }, // GlobalID
+      { tag: t.name, class: 'text-[#dfbfff] cursor-default' }, // GlobalID
       { tag: t.variableName, class: 'text-[#69bf60]' }, // LocalID
       { tag: t.propertyName, class: '' }, // Radical
       { tag: t.keyword, class: 'text-[#808dff]' }, // keywords
@@ -100,8 +102,8 @@ function RSInput({
     EditorView.lineWrapping,
     RSLanguage,
     ccBracketMatching(darkMode),
-    //cursorTooltip(),
-  ], [darkMode]);
+    rshoverTooltip(schema?.items || []),
+  ], [darkMode, schema?.items]);
 
   return (
     <div className={`w-full ${cursor} text-lg`}>
diff --git a/rsconcept/frontend/src/components/RSInput/tooltip.ts b/rsconcept/frontend/src/components/RSInput/tooltip.ts
index d0c1f6c0..3514aefb 100644
--- a/rsconcept/frontend/src/components/RSInput/tooltip.ts
+++ b/rsconcept/frontend/src/components/RSInput/tooltip.ts
@@ -1,53 +1,64 @@
-import { EditorState, Extension, StateField } from "@codemirror/state";
-import { EditorView, showTooltip } from "@codemirror/view";
+import { Extension } from "@codemirror/state";
+import { hoverTooltip } from "@codemirror/view";
 
-function getCursorTooltips(state: EditorState) {
-  return state.selection.ranges
-    .filter(range => !range.empty)
-    .map(range => {
-      const line = state.doc.lineAt(range.head);
-      const text = `${line.number}:${range.head - line.from}`;
-      return {
-        pos: (range.to + range.from)/2,
-        above: false,
-        strictSide: true,
-        create: () => {
-          const dom = document.createElement("div");
-          dom.className = "cm-tooltip-cursor";
-          dom.textContent = text;
-          return { dom };
-        }
-      };
-    });
-}
+import { IConstituenta } from '../../utils/models';
+import { getCstTypificationLabel } from '../../utils/staticUI';
 
-const cursorTooltipField = StateField.define({
-  create: getCursorTooltips,
-  update(tooltips, transaction) {
-    if (!transaction.docChanged && !transaction.selection) {
-      return tooltips;
-    }
-    return getCursorTooltips(transaction.state);
-  },
-  provide: field => showTooltip.computeN([field], state => state.field(field))
-});
-
-const cursorTooltipBaseTheme = EditorView.baseTheme({
-  ".cm-tooltip.cm-tooltip-cursor": {
-    backgroundColor: "#66b",
-    color: "white",
-    border: "none",
-    padding: "2px 7px",
-    borderRadius: "4px",
-    "&.cm-tooltip-arrow:before": {
-      borderTopColor: "#66b"
-    },
-    "&.cm-tooltip-arrow:after": {
-      borderTopColor: "transparent"
-    }
+function createTooltipFor(cst: IConstituenta) {
+  const dom = document.createElement('div');
+  dom.className = 'overflow-y-auto border shadow-md max-h-[25rem] max-w-[25rem] min-w-[10rem] w-fit z-20 text-sm';
+  const alias = document.createElement('h1');
+  alias.className = 'text-sm text-left';
+  alias.textContent = `${cst.alias}: ${getCstTypificationLabel(cst)}`;
+  dom.appendChild(alias);
+  if (cst.term.resolved) {
+    const term = document.createElement('p');
+    term.innerHTML = `<b>Термин:</b> ${cst.term.resolved}`;
+    dom.appendChild(term);
   }
-});
-
-export function cursorTooltip(): Extension {
-  return [cursorTooltipField, cursorTooltipBaseTheme];
+  if (cst.definition.formal) {
+    const expression = document.createElement('p');
+    expression.innerHTML = `<b>Выражение:</b> ${cst.definition.formal}`;
+    dom.appendChild(expression);
+  }
+  if (cst.definition.text.resolved) {
+    const definition = document.createElement('p');
+    definition.innerHTML = `<b>Определение:</b> ${cst.definition.text.resolved}`;
+    dom.appendChild(definition);
+  }
+  if (cst.convention) {
+    const convention = document.createElement('p');
+    convention.innerHTML = `<b>Конвенция:</b> ${cst.convention}`;
+    dom.appendChild(convention);
+  }
+  return { dom: dom }
+}
+
+export const getHoverTooltip = (items: IConstituenta[]) => {
+  return hoverTooltip((view, pos, side) => {
+    const {from, to, text} = view.state.doc.lineAt(pos);
+    let start = pos, end = pos;
+    while (start > from && /\w/.test(text[start - from - 1]))
+      start--;
+    while (end < to && /\w/.test(text[end - from]))
+      end++;
+    if (start == pos && side < 0 || end == pos && side > 0) {
+      return null;
+    }
+    const alias = text.slice(start - from, end - from);
+    const cst = items.find(cst => cst.alias === alias);
+    if (!cst) {
+      return null;
+    }
+    return {
+      pos: start,
+      end: end,
+      above: false,
+      create: () => createTooltipFor(cst)
+    }
+  });
+}
+
+export function rshoverTooltip(items: IConstituenta[]): Extension {
+  return [getHoverTooltip(items)];
 }