diff --git a/rsconcept/frontend/src/components/Common/ConceptDataTable.tsx b/rsconcept/frontend/src/components/Common/ConceptDataTable.tsx
index 9da2e38e..ea619cfe 100644
--- a/rsconcept/frontend/src/components/Common/ConceptDataTable.tsx
+++ b/rsconcept/frontend/src/components/Common/ConceptDataTable.tsx
@@ -15,21 +15,21 @@ createTheme('customDark', {
     disabled: 'rgba(228, 228, 231, 0.54)'
   },
   background: {
-    default: '#002b36'
+    default: '#002129'
   },
   context: {
     background: '#3e014d',
     text: 'rgba(228, 228, 231, 0.87)'
   },
   highlightOnHover: {
-    default: '#3e014d',
+    default: '#2d0138',
     text: 'rgba(228, 228, 231, 1)'
   },
   divider: {
     default: '#6b6b6b'
   },
   striped: {
-    default: '#004859',
+    default: '#003845',
     text: 'rgba(228, 228, 231, 1)'
   },
   selected: {
diff --git a/rsconcept/frontend/src/index.css b/rsconcept/frontend/src/index.css
index b853420e..54ac9339 100644
--- a/rsconcept/frontend/src/index.css
+++ b/rsconcept/frontend/src/index.css
@@ -3,7 +3,7 @@
 @tailwind utilities;
 
 .rdt_TableCell{
-  font-size: 14px;
+  font-size: 0.875rem;
 }
 
 [data-color-scheme="dark"] {
@@ -59,7 +59,7 @@
   }
 
   .clr-input {
-    @apply dark:bg-black bg-white disabled:bg-[#f0f2f7] dark:disabled:bg-gray-700
+    @apply dark:bg-[#070b12] bg-white disabled:bg-[#f0f2f7] dark:disabled:bg-gray-700
   }
 
   .clr-footer {
diff --git a/rsconcept/frontend/src/pages/RSFormPage/EditorConstituenta.tsx b/rsconcept/frontend/src/pages/RSFormPage/EditorConstituenta.tsx
index 587ccae9..081a66a6 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/EditorConstituenta.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/EditorConstituenta.tsx
@@ -171,8 +171,8 @@ function EditorConstituenta({ activeID, onShowAST, onCreateCst, onOpenEdit, onDe
                 <p>- столбец "Описание" содержит один из непустых текстовых атрибутов</p>
                 <Divider margins='mt-2' />
                 <h1>Статусы</h1>
-                { [... mapStatusInfo.values()].map(info => {
-                    return (<p className='py-1'>
+                { [... mapStatusInfo.values()].map((info, index) => {
+                    return (<p className='py-1' key={`status-info-${index}`}>
                       <span className={`inline-block font-semibold min-w-[4rem] text-center border ${info.color}`}>
                         {info.text}
                       </span>
diff --git a/rsconcept/frontend/src/pages/RSFormPage/EditorRSExpression.tsx b/rsconcept/frontend/src/pages/RSFormPage/EditorRSExpression.tsx
index 7e63ca79..b62330c0 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/EditorRSExpression.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/EditorRSExpression.tsx
@@ -4,7 +4,6 @@ import { useCallback, useLayoutEffect, useMemo, useRef, useState } from 'react';
 import Button from '../../components/Common/Button';
 import Label from '../../components/Common/Label';
 import { Loader } from '../../components/Common/Loader';
-import { useAuth } from '../../context/AuthContext';
 import { useRSForm } from '../../context/RSFormContext';
 import useCheckExpression from '../../hooks/useCheckExpression';
 import { TokenID } from '../../utils/enums';
@@ -33,15 +32,13 @@ interface EditorRSExpressionProps {
 }
 
 function EditorRSExpression({
-  id, activeCst, label, disabled, isActive, placeholder, value, setValue, onShowAST, 
+  id, activeCst, label, disabled, isActive, placeholder, value, onShowAST, 
   toggleEditMode, setTypification, onChange
 }: EditorRSExpressionProps) {
-  const { user } = useAuth();
   const { schema } = useRSForm();
 
   const [isModified, setIsModified] = useState(false);
   const { parseData, checkExpression, resetParse, loading } = useCheckExpression({ schema });
-  const expressionCtrl = useRef<HTMLTextAreaElement>(null);
   const rsInput = useRef<ReactCodeMirrorRef>(null);
 
   useLayoutEffect(() => {
@@ -66,11 +63,10 @@ function EditorRSExpression({
     const expression = prefix + value;
     checkExpression(expression, parse => {
       if (parse.errors.length > 0) {
-        const errorPosition = parse.errors[0].position - prefix.length
-        expressionCtrl.current!.selectionStart = errorPosition;
-        expressionCtrl.current!.selectionEnd = errorPosition;
+        onShowError(parse.errors[0]);
+      } else {
+        rsInput.current?.view?.focus();
       }
-      expressionCtrl.current!.focus();
       setIsModified(false);
       setTypification(getTypificationLabel({
         isValid: parse.parseResult,
@@ -82,38 +78,40 @@ function EditorRSExpression({
 
   const onShowError = useCallback(
   (error: IRSErrorDescription) => {
-      if (!activeCst || !expressionCtrl.current) {
-        return;
+    if (!activeCst || !rsInput.current) {
+      return;
+    }
+    const prefix = getCstExpressionPrefix(activeCst);
+    const errorPosition = error.position - prefix.length;
+    rsInput.current?.view?.dispatch({
+      selection: {
+        anchor: errorPosition,
+        head: errorPosition
       }
-      const errorPosition = error.position -  getCstExpressionPrefix(activeCst).length
-      expressionCtrl.current.selectionStart = errorPosition;
-      expressionCtrl.current.selectionEnd = errorPosition;
-      expressionCtrl.current.focus();
+    });
+    rsInput.current?.view?.focus();
   }, [activeCst]);
 
   const handleEdit = useCallback((id: TokenID, key?: string) => {
-    if (!expressionCtrl.current) {
+    if (!rsInput.current || !rsInput.current.editor || !rsInput.current.state || !rsInput.current.view) {
       return;
     }
-    const text = new TextWrapper(expressionCtrl.current);
+    const text = new TextWrapper(rsInput.current as Required<ReactCodeMirrorRef>);
     if (id === TokenID.ID_LOCAL) {
       text.insertChar(key ?? 'unknown_local');
     } else {
       text.insertToken(id);
     }
-    text.finalize();
-    text.focus();
-    setValue(text.value);
+    rsInput.current?.view?.focus();
     setIsModified(true);
-  }, [setValue]);
+  }, []);
   
   const handleInput = useCallback(
-  (event: React.KeyboardEvent<HTMLTextAreaElement>) => {
-    if (!expressionCtrl.current) {
+  (event: React.KeyboardEvent<HTMLDivElement>) => {
+    if (!rsInput.current) {
       return;
     }
-    const text = new TextWrapper(expressionCtrl.current);
-    // rsInput.current?.state?.selection
+    const text = new TextWrapper(rsInput.current as Required<ReactCodeMirrorRef>);
     if (event.shiftKey && event.key === '*' && !event.altKey) {
       text.insertToken(TokenID.DECART);
     } else if (event.altKey) {
@@ -130,10 +128,8 @@ function EditorRSExpression({
       return;
     }
     event.preventDefault();
-    text.finalize();
-    setValue(text.value);
     setIsModified(true);
-  }, [expressionCtrl, setValue]);
+  }, []);
 
   const EditButtons = useMemo(() => {
     return (<div className='flex items-center justify-between w-full'>
@@ -229,24 +225,15 @@ function EditorRSExpression({
         required={false}
         htmlFor={id}
       />
-      <textarea id={id} ref={expressionCtrl}
-        className='w-full px-3 py-2 mt-2 leading-tight border shadow clr-input'
-        rows={6}
+      <RSInput innerref={rsInput}
+        className='mt-2'
+        value={value}
         placeholder={placeholder}
-        value={value}
-        onChange={event => handleChange(event.target.value)}
-        onFocus={handleFocusIn}
-        onKeyDown={handleInput}
-        disabled={disabled}
-        spellCheck={false}
-      />
-      { user?.is_staff && 
-      <RSInput ref={rsInput}
-        value={value}
+        editable={!disabled}
         onChange={handleChange}
-        placeholder={placeholder}
-        disabled={disabled}
-      /> }
+        onKeyDown={handleInput}
+        onFocus={handleFocusIn}
+      />
       <div className='flex w-full gap-4 py-1 mt-1 justify-stretch'>
         <div className='flex flex-col gap-2'>
           <Button
@@ -257,7 +244,7 @@ function EditorRSExpression({
             onClick={handleCheckExpression}
           />
         </div>
-        {isActive && EditButtons}
+        {isActive && !disabled && EditButtons}
       </div>
       { (loading || parseData) && 
       <div className='w-full overflow-y-auto border mt-2 max-h-[14rem] min-h-[7rem]'>
diff --git a/rsconcept/frontend/src/pages/RSFormPage/elements/ParsingResult.tsx b/rsconcept/frontend/src/pages/RSFormPage/elements/ParsingResult.tsx
index ef2e9eca..72b54ef8 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/elements/ParsingResult.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/elements/ParsingResult.tsx
@@ -18,9 +18,9 @@ function ParsingResult({ data, onShowAST, onShowError }: ParsingResultProps) {
   return (
     <div className='px-3 py-2'>
       <p>Ошибок: <b>{errorCount}</b> | Предупреждений: <b>{warningsCount}</b></p>
-      {data.errors.map(error => {
+      {data.errors.map((error, index) => {
         return (
-        <p className='cursor-pointer text-red' onClick={() => onShowError(error)}>
+        <p key={`error-${index}`} className='cursor-pointer text-red' onClick={() => onShowError(error)}>
           <span className='mr-1 font-semibold underline'>{error.isCritical ? 'Ошибка' : 'Предупреждение'} {getRSErrorPrefix(error)}:</span>
           <span> {getRSErrorMessage(error)}</span>
         </p>
diff --git a/rsconcept/frontend/src/pages/RSFormPage/elements/RSInput.tsx b/rsconcept/frontend/src/pages/RSFormPage/elements/RSInput.tsx
index ba3ac765..254c4fa8 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/elements/RSInput.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/elements/RSInput.tsx
@@ -1,43 +1,12 @@
+import { bracketMatching } from '@codemirror/language';
 import { Extension } from '@codemirror/state';
 import { createTheme } from '@uiw/codemirror-themes';
-import CodeMirror, { BasicSetupOptions, ReactCodeMirrorRef } from '@uiw/react-codemirror';
+import CodeMirror, { BasicSetupOptions, ReactCodeMirrorProps, ReactCodeMirrorRef } from '@uiw/react-codemirror';
 import { EditorView } from 'codemirror';
-import { Ref } from 'react';
+import { Ref, useMemo } from 'react';
 
 import { useConceptTheme } from '../../../context/ThemeContext';
 
-const lightTheme: Extension = createTheme({
-  theme: 'light',
-  settings: {
-    fontFamily: 'inherit',
-    background: '#ffffff',
-    foreground: '#000000',
-    selection: '#036dd626'
-  },
-  styles: [
-    // { tag: t.comment, color: '#787b8099' },
-    // { tag: t.variableName, color: '#0080ff' },
-    // { tag: [t.string, t.special(t.brace)], color: '#5c6166' },
-    // { tag: t.definition(t.typeName), color: '#5c6166' },
-  ]
-});
-
-const darkTheme: Extension = createTheme({
-  theme: 'dark',
-  settings: {
-    fontFamily: 'inherit',
-    background: '#000000',
-    foreground: '#ffffff',
-    selection: '#036dd626'
-  },
-  styles: [
-    // { tag: t.comment, color: '#787b8099' },
-    // { tag: t.variableName, color: '#0080ff' },
-    // { tag: [t.string, t.special(t.brace)], color: '#5c6166' },
-    // { tag: t.definition(t.typeName), color: '#5c6166' },
-  ]
-});
-
 const editorSetup: BasicSetupOptions = {
   highlightSpecialChars: true,
   history: true,
@@ -52,7 +21,7 @@ const editorSetup: BasicSetupOptions = {
   dropCursor: false,
   allowMultipleSelections: false,
   indentOnInput: false,
-  bracketMatching: true,
+  bracketMatching: false,
   closeBrackets: false,
   autocompletion: false,
   rectangularSelection: false,
@@ -67,35 +36,74 @@ const editorSetup: BasicSetupOptions = {
 };
 
 const editorExtensions = [
-  EditorView.lineWrapping
+  EditorView.lineWrapping,
+  bracketMatching()
 ];
 
-interface RSInputProps {
-  ref?: Ref<ReactCodeMirrorRef>
-  value?: string
-  disabled?: boolean
-  height?: string
-  placeholder?: string
+interface RSInputProps 
+extends Omit<ReactCodeMirrorProps, 'onChange'> {
+  innerref?: Ref<ReactCodeMirrorRef> | undefined
   onChange: (newValue: string) => void
+  onKeyDown: (event: React.KeyboardEvent<HTMLDivElement>) => void
 }
 
 function RSInput({ 
-  disabled, onChange,
+  innerref, onChange, editable,
   height='10rem',
   ...props 
 }: RSInputProps) {
   const { darkMode } = useConceptTheme();
 
+  const cursor = useMemo(() => editable ? 'cursor-text': 'cursor-default', [editable]);
+  const lightTheme: Extension = useMemo(
+  () => createTheme({
+    theme: 'light',
+    settings: {
+      fontFamily: 'inherit',
+      background: editable ? '#ffffff' : '#f0f2f7',
+      foreground: '#000000',
+      selection: '#036dd626',
+      selectionMatch: '#036dd626',
+      caret: '#5d00ff',
+    },
+    styles: [
+      // { tag: t.comment, color: '#787b8099' },
+      // { tag: t.variableName, color: '#0080ff' },
+      // { tag: [t.string, t.special(t.brace)], color: '#5c6166' },
+      // { tag: t.definition(t.typeName), color: '#5c6166' },
+    ]
+  }), [editable]);
+  
+  const darkTheme: Extension = useMemo(
+  () => createTheme({
+    theme: 'dark',
+    settings: {
+      fontFamily: 'inherit',
+      background: editable ? '#070b12' : '#374151',
+      foreground: '#e4e4e7',
+      selection: '#ffae00b0',
+      selectionMatch: '#ffae00b0',
+      caret: '#ffaa00'
+    },
+    styles: [
+      // { tag: t.comment, color: '#787b8099' },
+      // { tag: t.variableName, color: '#0080ff' },
+      // { tag: [t.string, t.special(t.brace)], color: '#5c6166' },
+      // { tag: t.definition(t.typeName), color: '#5c6166' },
+    ]
+  }), [editable]);
+
   return (
-    <div className={`w-full h-[${height}]`}>
+    <div className={`w-full h-[${height}] ${cursor}`}>
     <CodeMirror
+      ref={innerref}
       basicSetup={editorSetup}
       extensions={editorExtensions}
-      editable={!disabled}
       height={height}
       indentWithTab={false}
       theme={darkMode ? darkTheme : lightTheme}
-      onChange={(value) => onChange(value)}
+      onChange={value => onChange(value)}
+      editable={editable}
       {...props}
     />
     </div>
diff --git a/rsconcept/frontend/src/pages/RSFormPage/elements/textEditing.ts b/rsconcept/frontend/src/pages/RSFormPage/elements/textEditing.ts
index 73a09d80..772462ad 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/elements/textEditing.ts
+++ b/rsconcept/frontend/src/pages/RSFormPage/elements/textEditing.ts
@@ -1,5 +1,7 @@
 // Formatted text editing helpers
 
+import { ReactCodeMirrorRef } from '@uiw/react-codemirror';
+
 import { TokenID } from '../../../utils/enums';
 
 export function getSymbolSubstitute(input: string): string | undefined {
@@ -34,65 +36,31 @@ export function getSymbolSubstitute(input: string): string | undefined {
   return undefined;
 }
 
-export interface IManagedText {
-  value: string
-  selStart: number
-  selEnd: number
-}
-
 // Note: Wrapper class for textareafield.
 // WARNING! Manipulations on value do not support UNDO browser
 // WARNING! No checks for selection out of text boundaries
-export class TextWrapper implements IManagedText {
-  value: string
-  selStart: number
-  selEnd: number
-  object: HTMLTextAreaElement
+export class TextWrapper {
+  ref: Required<ReactCodeMirrorRef>
 
-  constructor(element: HTMLTextAreaElement) {
-    this.object = element;
-    this.value = this.object.value;
-    this.selStart = this.object.selectionStart;
-    this.selEnd = this.object.selectionEnd;
-  }
-
-  focus() {
-    this.object.focus();
-  }
-
-  refresh() {
-    this.value = this.object.value;
-    this.selStart = this.object.selectionStart;
-    this.selEnd = this.object.selectionEnd;
-  }
-
-  finalize() {
-    this.object.value = this.value;
-    this.object.selectionStart = this.selStart;
-    this.object.selectionEnd = this.selEnd;
+  constructor(object: Required<ReactCodeMirrorRef>) {
+    this.ref = object;
   }
 
   replaceWith(data: string) {
-    this.value = this.value.substring(0, this.selStart) + data + this.value.substring(this.selEnd, this.value.length);
-    this.selEnd += data.length - this.selEnd + this.selStart;
-    this.selStart = this.selEnd;
+    this.ref.view.dispatch(this.ref.view.state.replaceSelection(data));
   }
 
   envelopeWith(left: string, right: string) {
-    this.value = this.value.substring(0, this.selStart) + left +
-                  this.value.substring(this.selStart, this.selEnd) + right +
-                  this.value.substring(this.selEnd, this.value.length);
-    this.selEnd += left.length + right.length;
-  }
-
-  moveSel(shift: number) {
-    this.selStart += shift;
-    this.selEnd += shift;
-  }
-
-  setSel(start: number, end: number) {
-    this.selStart = start;
-    this.selEnd = end;
+    this.ref.view.dispatch({
+      changes: [
+        {from: this.ref.view.state.selection.main.from, insert: left}, 
+        {from: this.ref.view.state.selection.main.to, insert: right}
+      ],
+      selection: {
+        anchor: this.ref.view.state.selection.main.from,
+        head: this.ref.view.state.selection.main.to + left.length + right.length
+      }
+    });
   }
 
   insertChar(key: string) {
@@ -114,18 +82,26 @@ export class TextWrapper implements IManagedText {
 
     case TokenID.PUNC_PL: {
       this.envelopeWith('(', ')');
-      this.selEnd = this.selStart + 1;
-      this.selStart = this.selEnd;
+      this.ref.view.dispatch({
+        selection: {
+          anchor: this.ref.view.state.selection.main.from + 1,
+        }
+      });
       return true;
     }
     case TokenID.PUNC_SL: {
       this.envelopeWith('[', ']');
-      this.selEnd = this.selStart + 1;
-      this.selStart = this.selEnd;
+      this.ref.view.dispatch({
+        selection: {
+          anchor: this.ref.view.state.selection.main.from + 1,
+        }
+      });
       return true;
     }
     case TokenID.BOOLEAN: {
-      if (this.selEnd !== this.selStart && this.value[this.selStart] === 'ℬ') {
+      const selStart = this.ref.view.state.selection.main.from;
+      if (selStart !== this.ref.view.state.selection.main.to && 
+        this.ref.view.state.sliceDoc(selStart, selStart + 1) === 'ℬ') {
         this.envelopeWith('ℬ', '');
       } else {
         this.envelopeWith('ℬ(', ')');