diff --git a/rsconcept/frontend/src/app/global-dialogs.tsx b/rsconcept/frontend/src/app/global-dialogs.tsx
index 9b62de62..f0c79d34 100644
--- a/rsconcept/frontend/src/app/global-dialogs.tsx
+++ b/rsconcept/frontend/src/app/global-dialogs.tsx
@@ -118,6 +118,11 @@ const DlgCreateBlock = React.lazy(() =>
     default: module.DlgCreateBlock
   }))
 );
+const DlgEditBlock = React.lazy(() =>
+  import('@/features/oss/dialogs/dlg-edit-block').then(module => ({
+    default: module.DlgEditBlock
+  }))
+);
 
 export const GlobalDialogs = () => {
   const active = useDialogsStore(state => state.active);
@@ -134,6 +139,8 @@ export const GlobalDialogs = () => {
       return <DlgCreateOperation />;
     case DialogType.CREATE_BLOCK:
       return <DlgCreateBlock />;
+    case DialogType.EDIT_BLOCK:
+      return <DlgEditBlock />;
     case DialogType.DELETE_CONSTITUENTA:
       return <DlgDeleteCst />;
     case DialogType.EDIT_EDITORS:
diff --git a/rsconcept/frontend/src/features/oss/backend/api.ts b/rsconcept/frontend/src/features/oss/backend/api.ts
index 2a160a52..02e09ed3 100644
--- a/rsconcept/frontend/src/features/oss/backend/api.ts
+++ b/rsconcept/frontend/src/features/oss/backend/api.ts
@@ -66,7 +66,7 @@ export const ossApi = {
   updateBlock: ({ itemID, data }: { itemID: number; data: IUpdateBlockDTO }) =>
     axiosPatch<IUpdateBlockDTO, IOperationSchemaDTO>({
       schema: schemaOperationSchema,
-      endpoint: `/api/oss/${itemID}/update-operation`,
+      endpoint: `/api/oss/${itemID}/update-block`,
       request: {
         data: data,
         successMessage: infoMsg.changesSaved
diff --git a/rsconcept/frontend/src/features/oss/components/select-parent.tsx b/rsconcept/frontend/src/features/oss/components/select-parent.tsx
new file mode 100644
index 00000000..1abc9ff7
--- /dev/null
+++ b/rsconcept/frontend/src/features/oss/components/select-parent.tsx
@@ -0,0 +1,35 @@
+import clsx from 'clsx';
+
+import { IconConceptBlock } from '@/components/icons';
+import { globalIDs } from '@/utils/constants';
+
+import { type IBlock } from '../models/oss';
+
+import { SelectBlock } from './select-block';
+
+interface SelectParentProps {
+  id?: string;
+  value: IBlock | null;
+  onChange: (newValue: IBlock | null) => void;
+
+  fullWidth?: boolean;
+  items?: IBlock[];
+  placeholder?: string;
+  noBorder?: boolean;
+  popoverClassname?: string;
+}
+
+export function SelectParent({ fullWidth, ...restProps }: SelectParentProps) {
+  return (
+    <div className={clsx('flex gap-2 items-center', !fullWidth ? 'w-80' : 'w-full')}>
+      <IconConceptBlock
+        tabIndex={-1}
+        size='2rem'
+        className='text-primary min-w-8'
+        data-tooltip-id={globalIDs.tooltip}
+        data-tooltip-content='Родительский блок содержания'
+      />
+      <SelectBlock className={fullWidth ? 'grow' : 'w-70'} {...restProps} />
+    </div>
+  );
+}
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx
index 48e48ec9..8e13b8a6 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/dlg-create-block.tsx
@@ -78,7 +78,7 @@ export function DlgCreateBlock() {
       submitText='Создать'
       canSubmit={isValid}
       onSubmit={event => void methods.handleSubmit(onSubmit)(event)}
-      className='w-160 px-6 h-128'
+      className='w-160 px-6 h-110'
       helpTopic={HelpTopic.CC_OSS}
     >
       <Tabs
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx
index baf791b0..2e551d24 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-card.tsx
@@ -6,7 +6,7 @@ import { TextArea, TextInput } from '@/components/input';
 import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateBlockDTO } from '../../backend/types';
-import { SelectBlock } from '../../components/select-block';
+import { SelectParent } from '../../components/select-parent';
 
 import { type DlgCreateBlockProps } from './dlg-create-block';
 
@@ -30,9 +30,8 @@ export function TabBlockCard() {
         name='item_data.parent'
         control={control}
         render={({ field }) => (
-          <SelectBlock
+          <SelectParent
             items={oss.blocks}
-            className='w-80'
             value={field.value ? oss.blockByID.get(field.value) ?? null : null}
             placeholder='Блок содержания не выбран'
             onChange={value => field.onChange(value ? value.id : null)}
@@ -44,7 +43,7 @@ export function TabBlockCard() {
         id='operation_comment' //
         label='Описание'
         noResize
-        rows={3}
+        rows={5}
         {...register('item_data.description')}
       />
     </div>
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx
index 8dd413b3..e190dbb7 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-block/tab-block-children.tsx
@@ -33,7 +33,7 @@ export function TabBlockChildren() {
   return (
     <div className='cc-fade-in cc-column'>
       <Label text={`Выбор содержания: [ ${value.length} ]`} />
-      <PickContents schema={oss} value={value} onChange={newValue => handleChangeSelected(newValue)} rows={8} />
+      <PickContents schema={oss} value={value} onChange={newValue => handleChangeSelected(newValue)} rows={10} />
     </div>
   );
 }
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/dlg-create-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/dlg-create-operation.tsx
index 985d7d08..03e58bcb 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/dlg-create-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/dlg-create-operation.tsx
@@ -93,7 +93,7 @@ export function DlgCreateOperation() {
       submitText='Создать'
       canSubmit={isValid}
       onSubmit={event => void methods.handleSubmit(onSubmit)(event)}
-      className='w-160 px-6 h-128'
+      className='w-180 px-6 h-128'
       helpTopic={HelpTopic.CC_OSS}
     >
       <Tabs
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-input-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-input-operation.tsx
index 4c86e530..2afbadaa 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-input-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-input-operation.tsx
@@ -12,7 +12,7 @@ import { Checkbox, Label, TextArea, TextInput } from '@/components/input';
 import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateOperationDTO } from '../../backend/types';
-import { SelectBlock } from '../../components/select-block';
+import { SelectParent } from '../../components/select-parent';
 import { sortItemsForOSS } from '../../models/oss-api';
 
 import { type DlgCreateOperationProps } from './dlg-create-operation';
@@ -66,7 +66,7 @@ export function TabInputOperation() {
           <TextInput
             id='operation_alias' //
             label='Сокращение'
-            className='w-64'
+            className='w-80'
             {...register('item_data.alias')}
             error={errors.item_data?.alias}
           />
@@ -74,7 +74,7 @@ export function TabInputOperation() {
             name='item_data.parent'
             control={control}
             render={({ field }) => (
-              <SelectBlock
+              <SelectParent
                 items={oss.blocks}
                 value={field.value ? oss.blockByID.get(field.value) ?? null : null}
                 placeholder='Блок содержания'
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-synthesis-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-synthesis-operation.tsx
index 2f6671d9..70df918d 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-synthesis-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-create-operation/tab-synthesis-operation.tsx
@@ -5,7 +5,7 @@ import { useDialogsStore } from '@/stores/dialogs';
 
 import { type ICreateOperationDTO } from '../../backend/types';
 import { PickMultiOperation } from '../../components/pick-multi-operation';
-import { SelectBlock } from '../../components/select-block';
+import { SelectParent } from '../../components/select-parent';
 
 import { type DlgCreateOperationProps } from './dlg-create-operation';
 
@@ -31,7 +31,7 @@ export function TabSynthesisOperation() {
           <TextInput
             id='operation_alias' //
             label='Сокращение'
-            className='w-64'
+            className='w-80'
             {...register('item_data.alias')}
             error={errors.item_data?.alias}
           />
@@ -39,7 +39,7 @@ export function TabSynthesisOperation() {
             name='item_data.parent'
             control={control}
             render={({ field }) => (
-              <SelectBlock
+              <SelectParent
                 items={oss.blocks}
                 value={field.value ? oss.blockByID.get(field.value) ?? null : null}
                 placeholder='Блок содержания'
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
new file mode 100644
index 00000000..25068835
--- /dev/null
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
@@ -0,0 +1,84 @@
+'use client';
+
+import { Controller, useForm } from 'react-hook-form';
+import { zodResolver } from '@hookform/resolvers/zod';
+
+import { TextArea, TextInput } from '@/components/input';
+import { ModalForm } from '@/components/modal';
+import { useDialogsStore } from '@/stores/dialogs';
+
+import { type IOssLayout, type IUpdateBlockDTO, schemaUpdateBlock } from '../backend/types';
+import { useUpdateBlock } from '../backend/use-update-block';
+import { SelectParent } from '../components/select-parent';
+import { type IBlock, type IOperationSchema } from '../models/oss';
+
+export interface DlgEditBlockProps {
+  oss: IOperationSchema;
+  target: IBlock;
+  layout: IOssLayout;
+}
+
+export function DlgEditBlock() {
+  const { oss, target, layout } = useDialogsStore(state => state.props as DlgEditBlockProps);
+  const { updateBlock } = useUpdateBlock();
+
+  const {
+    handleSubmit,
+    control,
+    register,
+    formState: { errors, isValid }
+  } = useForm<IUpdateBlockDTO>({
+    resolver: zodResolver(schemaUpdateBlock),
+    defaultValues: {
+      target: target.id,
+      item_data: {
+        title: target.title,
+        description: target.description,
+        parent: target.parent
+      },
+      layout: layout
+    },
+    mode: 'onChange'
+  });
+
+  function onSubmit(data: IUpdateBlockDTO) {
+    return updateBlock({ itemID: oss.id, data });
+  }
+
+  return (
+    <ModalForm
+      header='Редактирование блока'
+      submitText='Сохранить'
+      canSubmit={isValid}
+      onSubmit={event => void handleSubmit(onSubmit)(event)}
+      className='w-160 px-6 h-fit cc-column'
+    >
+      <TextInput
+        id='operation_title' //
+        label='Название'
+        {...register('item_data.title')}
+        error={errors.item_data?.title}
+      />
+      <Controller
+        name='item_data.parent'
+        control={control}
+        render={({ field }) => (
+          <SelectParent
+            items={oss.blocks.filter(block => block.id !== target.id)}
+            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+            placeholder='Блок содержания не выбран'
+            onChange={value => field.onChange(value ? value.id : null)}
+          />
+        )}
+      />
+
+      <TextArea
+        id='operation_comment' //
+        label='Описание'
+        noResize
+        rows={5}
+        {...register('item_data.description')}
+      />
+    </ModalForm>
+  );
+}
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx
index 7503cac2..356262b9 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/tab-operation.tsx
@@ -4,7 +4,7 @@ import { TextArea, TextInput } from '@/components/input';
 import { useDialogsStore } from '@/stores/dialogs';
 
 import { type IUpdateOperationDTO } from '../../backend/types';
-import { SelectBlock } from '../../components/select-block';
+import { SelectParent } from '../../components/select-parent';
 
 import { type DlgEditOperationProps } from './dlg-edit-operation';
 
@@ -24,37 +24,35 @@ export function TabOperation() {
         {...register('item_data.title')}
         error={errors.item_data?.title}
       />
-      <div className='flex gap-6'>
-        <div className='grid gap-1'>
-          <TextInput
-            id='operation_alias' //
-            label='Сокращение'
-            className='w-64'
-            {...register('item_data.alias')}
-            error={errors.item_data?.alias}
+
+      <TextInput
+        id='operation_alias' //
+        label='Сокращение'
+        className='w-80'
+        {...register('item_data.alias')}
+        error={errors.item_data?.alias}
+      />
+      <Controller
+        name='item_data.parent'
+        control={control}
+        render={({ field }) => (
+          <SelectParent
+            items={oss.blocks}
+            value={field.value ? oss.blockByID.get(field.value) ?? null : null}
+            placeholder='Блок содержания'
+            onChange={value => field.onChange(value ? value.id : null)}
           />
-          <Controller
-            name='item_data.parent'
-            control={control}
-            render={({ field }) => (
-              <SelectBlock
-                items={oss.blocks}
-                value={field.value ? oss.blockByID.get(field.value) ?? null : null}
-                placeholder='Блок содержания'
-                onChange={value => field.onChange(value ? value.id : null)}
-              />
-            )}
-          />
-        </div>
-        <TextArea
-          id='operation_comment'
-          label='Описание'
-          noResize
-          rows={3}
-          {...register('item_data.description')}
-          error={errors.item_data?.description}
-        />
-      </div>
+        )}
+      />
+
+      <TextArea
+        id='operation_comment'
+        label='Описание'
+        noResize
+        rows={5}
+        {...register('item_data.description')}
+        error={errors.item_data?.description}
+      />
     </div>
   );
 }
diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/block-node.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/block-node.tsx
index b1a2b6c3..5ed22755 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/block-node.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/graph/block-node.tsx
@@ -44,10 +44,10 @@ export function BlockNode(node: BlockInternalNode) {
       >
         <div
           className={clsx(
-            'w-fit mx-auto -translate-y-[14px]',
+            'w-fit mx-auto -translate-y-1/2 -mt-[8px]',
             'px-2',
             'bg-background rounded-lg',
-            'text-xs line-clamp-1 text-ellipsis',
+            'text-[18px]/[20px] line-clamp-2 text-center text-ellipsis',
             'pointer-events-auto'
           )}
         >
diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
index e0501e40..84c043c0 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
@@ -18,6 +18,7 @@ import { type IOperationSchema } from '@/features/oss/models/oss';
 import { useMainHeight } from '@/stores/app-layout';
 import { useDialogsStore } from '@/stores/dialogs';
 import { PARAMETER } from '@/utils/constants';
+import { promptText } from '@/utils/labels';
 
 import { useMutatingOss } from '../../../backend/use-mutating-oss';
 import { useUpdateLayout } from '../../../backend/use-update-layout';
@@ -190,6 +191,9 @@ export function OssFlow() {
       if (!block) {
         return;
       }
+      if (!window.confirm(promptText.deleteBlock)) {
+        return;
+      }
       void deleteBlock({ itemID: schema.id, data: { target: block.id, layout: getLayout() } });
     }
   }
diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/toolbar-oss-graph.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/toolbar-oss-graph.tsx
index 3276ff1b..4171d45a 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/toolbar-oss-graph.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/toolbar-oss-graph.tsx
@@ -69,10 +69,11 @@ export function ToolbarOssGraph({
   const toggleEdgeAnimate = useOSSGraphStore(state => state.toggleEdgeAnimate);
   const toggleEdgeStraight = useOSSGraphStore(state => state.toggleEdgeStraight);
 
-  const { updateLayout: updatePositions } = useUpdateLayout();
-  const { executeOperation: operationExecute } = useExecuteOperation();
+  const { updateLayout } = useUpdateLayout();
+  const { executeOperation } = useExecuteOperation();
 
   const showEditOperation = useDialogsStore(state => state.showEditOperation);
+  const showEditBlock = useDialogsStore(state => state.showEditBlock);
 
   const readyForSynthesis = (() => {
     if (!selectedOperation || selectedOperation.operation_type !== OperationType.SYNTHESIS) {
@@ -100,28 +101,33 @@ export function ToolbarOssGraph({
   }
 
   function handleSavePositions() {
-    void updatePositions({ itemID: schema.id, data: getLayout() });
+    void updateLayout({ itemID: schema.id, data: getLayout() });
   }
 
   function handleOperationExecute() {
     if (!readyForSynthesis || !selectedOperation) {
       return;
     }
-    void operationExecute({
+    void executeOperation({
       itemID: schema.id, //
       data: { target: selectedOperation.id, layout: getLayout() }
     });
   }
 
   function handleEditItem() {
-    if (!selectedOperation) {
-      return;
+    if (selectedOperation) {
+      showEditOperation({
+        oss: schema,
+        target: selectedOperation,
+        layout: getLayout()
+      });
+    } else if (selectedBlock) {
+      showEditBlock({
+        oss: schema,
+        target: selectedBlock,
+        layout: getLayout()
+      });
     }
-    showEditOperation({
-      oss: schema,
-      target: selectedOperation,
-      layout: getLayout()
-    });
   }
 
   return (
diff --git a/rsconcept/frontend/src/stores/dialogs.ts b/rsconcept/frontend/src/stores/dialogs.ts
index d71785ed..801330a1 100644
--- a/rsconcept/frontend/src/stores/dialogs.ts
+++ b/rsconcept/frontend/src/stores/dialogs.ts
@@ -9,6 +9,7 @@ import { type DlgChangeInputSchemaProps } from '@/features/oss/dialogs/dlg-chang
 import { type DlgCreateBlockProps } from '@/features/oss/dialogs/dlg-create-block/dlg-create-block';
 import { type DlgCreateOperationProps } from '@/features/oss/dialogs/dlg-create-operation/dlg-create-operation';
 import { type DlgDeleteOperationProps } from '@/features/oss/dialogs/dlg-delete-operation';
+import { type DlgEditBlockProps } from '@/features/oss/dialogs/dlg-edit-block';
 import { type DlgEditOperationProps } from '@/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation';
 import { type DlgRelocateConstituentsProps } from '@/features/oss/dialogs/dlg-relocate-constituents';
 import { type DlgCreateCstProps } from '@/features/rsform/dialogs/dlg-create-cst/dlg-create-cst';
@@ -36,6 +37,7 @@ export const DialogType = {
   RENAME_CONSTITUENTA: 6,
 
   CREATE_BLOCK: 7,
+  EDIT_BLOCK: 25,
 
   CREATE_OPERATION: 8,
   EDIT_OPERATION: 9,
@@ -76,6 +78,7 @@ interface DialogsStore {
   showDeleteCst: (props: DlgDeleteCstProps) => void;
   showEditEditors: (props: DlgEditEditorsProps) => void;
   showEditOperation: (props: DlgEditOperationProps) => void;
+  showEditBlock: (props: DlgEditBlockProps) => void;
   showEditReference: (props: DlgEditReferenceProps) => void;
   showEditVersions: (props: DlgEditVersionsProps) => void;
   showEditWordForms: (props: DlgEditWordFormsProps) => void;
@@ -112,6 +115,7 @@ export const useDialogsStore = create<DialogsStore>()(set => ({
   showDeleteCst: props => set({ active: DialogType.DELETE_CONSTITUENTA, props: props }),
   showEditEditors: props => set({ active: DialogType.EDIT_EDITORS, props: props }),
   showEditOperation: props => set({ active: DialogType.EDIT_OPERATION, props: props }),
+  showEditBlock: props => set({ active: DialogType.EDIT_BLOCK, props: props }),
   showEditReference: props => set({ active: DialogType.EDIT_REFERENCE, props: props }),
   showEditVersions: props => set({ active: DialogType.EDIT_VERSIONS, props: props }),
   showEditWordForms: props => set({ active: DialogType.EDIT_WORD_FORMS, props: props }),
diff --git a/rsconcept/frontend/src/utils/labels.ts b/rsconcept/frontend/src/utils/labels.ts
index db10f044..1c76c912 100644
--- a/rsconcept/frontend/src/utils/labels.ts
+++ b/rsconcept/frontend/src/utils/labels.ts
@@ -79,6 +79,7 @@ export const tooltipText = {
 export const promptText = {
   promptUnsaved: 'Присутствуют несохраненные изменения. Продолжить без их учета?',
   deleteLibraryItem: 'Вы уверены, что хотите удалить данную схему?',
+  deleteBlock: 'Вы уверены, что хотите удалить данный блок?',
   deleteOSS:
     'Внимание!!\nУдаление операционной схемы приведет к удалению всех операций и собственных концептуальных схем.\nДанное действие нельзя отменить.\nВы уверены, что хотите удалить данную ОСС?',
   generateWordforms: 'Данное действие приведет к перезаписи словоформ при совпадении граммем. Продолжить?',