# 标签页

- 页面: https://jiguang132.com/zh/resources/material-ui/docs/tabs
- 资源: Material UI (https://jiguang132.com/zh/resources/material-ui.md)
- 全部指南: https://jiguang132.com/zh/resources/material-ui/docs.md

通过原生 Tabs 与 Tab 在相关内容面板之间切换。

本指南覆盖默认 Emotion 环境的 Material UI Core；扩展包与额外示例按清单单独标注。

## 使用场景与业务边界

Core 需要宿主提供面板语义；Lab TabContext／TabList／TabPanel 不在本轮内。隐藏但保留挂载的面板仍可能运行副作用。

## 原生组成与范围

`Tabs`, `Tab`, `TabScrollButton`

保持 Material UI 原生组合与类型，不替换为 JGuang／Base UI／Radix 同名 API。示例条目不是额外组件。

未纳入的集成: `TabContext` (@mui/lab), `TabList` (@mui/lab), `TabPanel` (@mui/lab). 不宣称已在默认 Emotion 环境验证。

## 原生安装与初始化

```bash
npm install @mui/material@9.4.0 @emotion/react@11.14.0 @emotion/styled@11.14.1
```

采用原生 npm 包与 Emotion，不提供虚构的 JGuang UI Registry 地址。将示例放在原生 ThemeProvider 内，按项目选择 CssBaseline 或 ScopedCssBaseline。先检查 React、现有 Provider、锁文件与 SSR 配置；不要覆盖用户文件或忽略 peer 冲突。本批实际验收 React 19.2.8；React 18 及以下须匹配 react-is。完整初始化规则见随附的双语 setup 文档。

## 关键原生参数

仅解释本指南选出的关键参数，不是平铺的通用 API。原生继承来源、slot 结构、可空值与泛型仍按固定源码保留。

| 所属组件.属性 | 用途说明 | 声明来源 |
| --- | --- | --- |
| `Tabs.value` | 受控原生值，其单值／数组／可空类型取决于所属组件。 | `Tabs` |
| `Tabs.onChange` | 所属控件的原生回调，保留其准确事件／数值／可空签名。 | `Tabs` |
| `Tabs.variant` | 所属组件的原生视觉枚举，不可替换为通用 variant 属性。 | `Tabs` |
| `Tabs.selectionFollowsFocus` | 仅在面板加载足够即时的情况下，让 Tabs 随键盘焦点激活。 | `Tabs` |
| `Tab.disabled` | 原生禁用交互状态，不是权限校验。 | `Tab` |

## 可运行原生示例

下列机器键只选择示例入口，不会作为通用 variant 属性传入每个组件。原生示例 JSX 与数据保持上游原文；JGuang 编写的验收示例明确标注。

- 基础介绍 · `BasicTabs` · 上游原生示例
- 使用标准 Core API · `KeepMountedStandardTabs` · 上游原生示例
- 标签换行 · `TabsWrappedLabel` · 上游原生示例
- 标签页颜色 · `ColorTabs` · 上游原生示例
- 禁用标签页 · `DisabledTabs` · 上游原生示例
- 占满宽度 · `FullWidthTabs` · 上游原生示例
- 居中 · `CenteredTabs` · 上游原生示例
- 自动显示滚动按钮 · `ScrollableTabsButtonAuto` · 上游原生示例
- 始终显示滚动按钮 · `ScrollableTabsButtonForce` · 上游原生示例
- 始终显示滚动按钮 · `ScrollableTabsButtonVisible` · 上游原生示例
- 隐藏滚动按钮 · `ScrollableTabsButtonPrevent` · 上游原生示例
- 定制样式 · `CustomizedTabs` · 上游原生示例
- 纵向标签页 · `VerticalTabs` · 上游原生示例
- 导航标签页 · `NavTabs` · 上游原生示例
- 图标标签页 · `IconTabs` · 上游原生示例
- 图标标签页 · `IconLabelTabs` · 上游原生示例
- 图标位置 · `IconPositionTabs` · 上游原生示例
- 焦点跟随选择的键盘标签页 · `AccessibleTabs1` · 上游原生示例
- 手动确认选择的键盘标签页 · `AccessibleTabs2` · 上游原生示例

## 尚未支持的额外示例

这些条目仍保留在上游清单中，不静默跳过，也不展示为已完成预览。需要补充依赖／框架验收后再纳入可运行列表。

- 实验性 API，Lab · `LabTabs`: `@mui/lab/TabContext`, `@mui/lab/TabList`, `@mui/lab/TabPanel`
- Lab API 扩展 · `KeepMountedLabTabs`: `@mui/lab/TabContext`, `@mui/lab/TabList`, `@mui/lab/TabPanel`

## 真实使用示例

固定版本的未修改原生示例；复制时同时保留所需的局部辅助文件。

```tsx
import * as React from 'react';
import Tabs from '@mui/material/Tabs';
import Tab from '@mui/material/Tab';
import Box from '@mui/material/Box';

interface TabPanelProps {
  children?: React.ReactNode;
  index: number;
  value: number;
}

function CustomTabPanel(props: TabPanelProps) {
  const { children, value, index, ...other } = props;

  return (
    <div
      role="tabpanel"
      hidden={value !== index}
      tabIndex={0}
      id={`simple-tabpanel-${index}`}
      aria-labelledby={`simple-tab-${index}`}
      {...other}
    >
      {value === index && <Box sx={{ p: 3 }}>{children}</Box>}
    </div>
  );
}

function a11yProps(index: number) {
  return {
    id: `simple-tab-${index}`,
    'aria-controls': `simple-tabpanel-${index}`,
  };
}

export default function BasicTabs() {
  const [value, setValue] = React.useState(0);

  const handleChange = (event: React.SyntheticEvent, newValue: number) => {
    setValue(newValue);
  };

  return (
    <Box sx={{ width: '100%' }}>
      <Box sx={{ borderBottom: 1, borderColor: 'divider' }}>
        <Tabs value={value} onChange={handleChange} aria-label="basic tabs example">
          <Tab label="Item One" {...a11yProps(0)} />
          <Tab label="Item Two" {...a11yProps(1)} />
          <Tab label="Item Three" {...a11yProps(2)} />
        </Tabs>
      </Box>
      <CustomTabPanel value={value} index={0}>
        Item One
      </CustomTabPanel>
      <CustomTabPanel value={value} index={1}>
        Item Two
      </CustomTabPanel>
      <CustomTabPanel value={value} index={2}>
        Item Three
      </CustomTabPanel>
    </Box>
  );
}

```

## 示例依赖边界

`react`, `@mui/material/Tabs`, `@mui/material/Tab`, `@mui/material/Box`, `@mui/material/TextField`, `@mui/material/styles`, `@mui/material/AppBar`, `@mui/material/Typography`, `@mui/icons-material/Phone`, `@mui/icons-material/Favorite`, `@mui/icons-material/PersonPin`, `@mui/icons-material/PhoneMissed`

直接导入 Icons／System／Utils 的示例需要匹配 9.4.0 包。局部数据与辅助文件属于示例闭包，不是额外组件。远程图片和模拟操作不提供后端。

## 固定上游 API 元数据参考

以下表格保留上游元数据，不是重新推断的通用类型体系。条件泛型、继承属性与回调细节以以下源码声明为准。主题默认配置可能覆盖元数据默认值。

### Tabs

```tsx
import Tabs from '@mui/material/Tabs';
import { Tabs } from '@mui/material';
```

| 属性 | 必需 | 上游元数据类型／约束 | 元数据默认值 |
| --- | --- | --- | --- |
| `action` | 否 | `ref` | — |
| `allowScrollButtonsMobile` | 否 | `bool` | `false` |
| `aria-label` | 否 | `string` | — |
| `aria-labelledby` | 否 | `string` | — |
| `centered` | 否 | `bool` | `false` |
| `children` | 否 | `node` | — |
| `classes` | 否 | `object` | — |
| `component` | 否 | `elementType` | — |
| `indicatorColor` | 否 | `'primary' \| 'secondary' \| string` | `'primary'` |
| `onChange` | 否 | `func` | — |
| `orientation` | 否 | `'horizontal' \| 'vertical'` | `'horizontal'` |
| `scrollButtons` | 否 | `'auto' \| false \| true` | `'auto'` |
| `selectionFollowsFocus` | 否 | `bool` | — |
| `slotProps` | 否 | `{ endScrollButtonIcon?: func \| object, indicator?: func \| object, list?: func \| object, root?: func \| object, scrollbar?: func \| object, scrollButtons?: func \| object, scroller?: func \| object, startScrollButtonIcon?: func \| object }` | `{}` |
| `slots` | 否 | `{ endScrollButtonIcon?: elementType, indicator?: elementType, list?: elementType, root?: elementType, scrollbar?: elementType, scrollButtons?: elementType, scroller?: elementType, startScrollButtonIcon?: elementType }` | `{}` |
| `sx` | 否 | `Array<func \| object \| bool> \| func \| object` | — |
| `textColor` | 否 | `'inherit' \| 'primary' \| 'secondary'` | `'primary'` |
| `value` | 否 | `any` | — |
| `variant` | 否 | `'fullWidth' \| 'scrollable' \| 'standard'` | `'standard'` |
| `visibleScrollbar` | 否 | `bool` | `false` |



### Tab

```tsx
import Tab from '@mui/material/Tab';
import { Tab } from '@mui/material';
```

原生继承: `ButtonBase`. 父级与 DOM 属性未被伪造为本组件新属性。

| 属性 | 必需 | 上游元数据类型／约束 | 元数据默认值 |
| --- | --- | --- | --- |
| `children` | 否 | `unsupportedProp` | — |
| `classes` | 否 | `object` | — |
| `disabled` | 否 | `bool` | `false` |
| `disableFocusRipple` | 否 | `bool` | `false` |
| `disableRipple` | 否 | `bool` | `false` |
| `icon` | 否 | `element \| string` | — |
| `iconPosition` | 否 | `'bottom' \| 'end' \| 'start' \| 'top'` | `'top'` |
| `label` | 否 | `node` | — |
| `sx` | 否 | `Array<func \| object \| bool> \| func \| object` | — |
| `value` | 否 | `any` | — |
| `wrapped` | 否 | `bool` | `false` |



### TabScrollButton

```tsx
import TabScrollButton from '@mui/material/TabScrollButton';
import { TabScrollButton } from '@mui/material';
```

| 属性 | 必需 | 上游元数据类型／约束 | 元数据默认值 |
| --- | --- | --- | --- |
| `direction` | 是 | `'left' \| 'right'` | — |
| `orientation` | 是 | `'horizontal' \| 'vertical'` | — |
| `children` | 否 | `node` | — |
| `classes` | 否 | `object` | — |
| `disabled` | 否 | `bool` | `false` |
| `slotProps` | 否 | `{ endScrollButtonIcon?: func \| object, startScrollButtonIcon?: func \| object }` | `{}` |
| `slots` | 否 | `{ EndScrollButtonIcon?: elementType, StartScrollButtonIcon?: elementType }` | `{}` |
| `sx` | 否 | `Array<func \| object \| bool> \| func \| object` | — |


## 原生源码声明

声明与 import 从固定源码提取，不平铺联合类型或外部继承。英文注释／类型属于原始源码参考，不代表上游正文已全文翻译。共享类型仍位于原生包中。

### vendor/src/Tabs/Tabs.d.ts

```ts
import * as React from 'react';

import { SxProps } from '@mui/system';

import { OverridableStringUnion } from '@mui/types';

import { CreateSlotsAndSlotProps, SlotProps } from '../utils/types';

import { Theme } from '../styles';

import TabScrollButton from '../TabScrollButton';

import { OverridableComponent, OverrideProps } from '../OverridableComponent';

import { TabsClasses } from './tabsClasses';

import SvgIcon from '../SvgIcon';

export interface TabsPropsIndicatorColorOverrides {}

export interface TabsPropsVariantOverrides {}

export interface TabsRootSlotPropsOverrides {}

export interface TabsScrollerSlotPropsOverrides {}

export interface TabsListSlotPropsOverrides {}

export interface TabsScrollbarSlotPropsOverrides {}

export interface TabsIndicatorSlotPropsOverrides {}

export interface TabsScrollButtonsSlotPropsOverrides {}

export interface TabsStartScrollButtonIconSlotPropsOverrides {}

export interface TabsEndScrollButtonIconSlotPropsOverrides {}

export interface TabsSlots {
  /**
   * The component used for the popper.
   * @default div
   */
  root: React.ElementType;
  /**
   * The component used for the scroller.
   * @default div
   */
  scroller: React.ElementType;
  /**
   * The component used for the flex container.
   * @default div
   */
  list: React.ElementType;
  /**
   * The component used for the scroller.
   * @default ScrollbarSize
   */
  scrollbar: React.ElementType;
  /**
   * The component used for the tab indicator.
   * @default span
   */
  indicator: React.ElementType;
  /**
   * The component used for the scroll button.
   * @default TabScrollButton
   */
  scrollButtons: React.ElementType;
  /**
   * The component used for the start scroll button icon.
   * @default KeyboardArrowLeft
   */
  startScrollButtonIcon: React.ElementType;
  /**
   * The component used for the end scroll button icon.
   * @default KeyboardArrowRight
   */
  endScrollButtonIcon: React.ElementType;
}

export type TabsSlotsAndSlotProps = CreateSlotsAndSlotProps<
  TabsSlots,
  {
    /**
     * Props forwarded to the root slot.
     * By default, the available props are based on the div element.
     */
    root: SlotProps<'div', TabsRootSlotPropsOverrides, TabsOwnerState>;
    /**
     * Props forwarded to the scroller slot.
     * By default, the available props are based on the div element.
     */
    scroller: SlotProps<'div', TabsScrollerSlotPropsOverrides, TabsOwnerState>;
    /**
     * Props forwarded to the list slot.
     * By default, the available props are based on the div element.
     */
    list: SlotProps<'div', TabsListSlotPropsOverrides, TabsOwnerState>;
    /**
     * Props forwarded to the scrollbar slot.
     * By default, the available props are based on the div element.
     */
    scrollbar: SlotProps<
      'div',
      {
        onChange?: ((scrollbarWidth: undefined | number) => void) | undefined;
      } & TabsScrollbarSlotPropsOverrides,
      TabsOwnerState
    >;
    /**
     * Props forwarded to the indicator slot.
     * By default, the available props are based on the span element.
     */
    indicator: SlotProps<'span', TabsIndicatorSlotPropsOverrides, TabsOwnerState>;
    /**
     * Props forwarded to the scrollButtons slot.
     * By default, the available props are based on the [TabScrollButton](https://mui.com/material-ui/api/tab-scroll-button/#props) component.
     */
    scrollButtons: SlotProps<
      typeof TabScrollButton,
      TabsScrollButtonsSlotPropsOverrides,
      TabsOwnerState
    >;
    /**
     * Props forwarded to the startScrollButtonIcon slot.
     * By default, the available props are based on the [SvgIcon](https://mui.com/material-ui/api/svg-icon/#props) component.
     */
    startScrollButtonIcon: SlotProps<
      typeof SvgIcon,
      TabsStartScrollButtonIconSlotPropsOverrides,
      TabsOwnerState
    >;
    /**
     * Props forwarded to the endScrollButtonIcon slot.
     * By default, the available props are based on the [SvgIcon](https://mui.com/material-ui/api/svg-icon/#props) component.
     */
    endScrollButtonIcon: SlotProps<
      typeof SvgIcon,
      TabsEndScrollButtonIconSlotPropsOverrides,
      TabsOwnerState
    >;
  }
>;

export interface TabsOwnerState extends Omit<TabsProps, 'slots' | 'slotProps'> {
  vertical: boolean;
  fixed: boolean;
  hideScrollbar: boolean;
  scrollableX: boolean;
  scrollableY: boolean;
  centered: boolean;
  scrollButtonsHideMobile: boolean;
}

export interface TabsOwnProps extends TabsSlotsAndSlotProps {
  /**
   * Callback fired when the component mounts.
   * This is useful when you want to trigger an action programmatically.
   * It supports two actions: `updateIndicator()` and `updateScrollButtons()`
   *
   * @param {object} actions This object contains all possible actions
   * that can be triggered programmatically.
   */
  action?: React.Ref<TabsActions> | undefined;
  /**
   * If `true`, the scroll buttons aren't forced hidden on mobile.
   * By default the scroll buttons are hidden on mobile and takes precedence over `scrollButtons`.
   * @default false
   */
  allowScrollButtonsMobile?: boolean | undefined;
  /**
   * The label for the Tabs as a string.
   */
  'aria-label'?: string | undefined;
  /**
   * An id or list of ids separated by a space that label the Tabs.
   */
  'aria-labelledby'?: string | undefined;
  /**
   * If `true`, the tabs are centered.
   * This prop is intended for large views.
   * @default false
   */
  centered?: boolean | undefined;
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<TabsClasses> | undefined;
  /**
   * Determines the color of the indicator.
   * @default 'primary'
   */
  indicatorColor?:
    OverridableStringUnion<'secondary' | 'primary', TabsPropsIndicatorColorOverrides> | undefined;
  /**
   * Callback fired when the value changes.
   *
   * @param {React.SyntheticEvent} event The event source of the callback. **Warning**: This is a generic event not a change event.
   * @param {any} value We default to the index of the child (number)
   */
  onChange?: ((event: React.SyntheticEvent, value: any) => void) | undefined;
  /**
   * The component orientation (layout flow direction).
   * @default 'horizontal'
   */
  orientation?: 'horizontal' | 'vertical' | undefined;
  /**
   * Determine behavior of scroll buttons when tabs are set to scroll:
   *
   * - `auto` will only present them when not all the items are visible.
   * - `true` will always present them.
   * - `false` will never present them.
   *
   * By default the scroll buttons are hidden on mobile.
   * This behavior can be disabled with `allowScrollButtonsMobile`.
   * @default 'auto'
   */
  scrollButtons?: 'auto' | true | false | undefined;
  /**
   * If `true` the selected tab changes on focus. Otherwise it only
   * changes on activation.
   */
  selectionFollowsFocus?: boolean | undefined;
  /**
   * Determines the color of the `Tab`.
   * @default 'primary'
   */
  textColor?: 'secondary' | 'primary' | 'inherit' | undefined;
  /**
   * The value of the currently selected `Tab`.
   * If you don't want any selected `Tab`, you can set this prop to `false`.
   */
  value?: any;
  /**
   *  Determines additional display behavior of the tabs:
   *
   *  - `scrollable` will invoke scrolling properties and allow for horizontally
   *  scrolling (or swiping) of the tab bar.
   *  - `fullWidth` will make the tabs grow to use all the available space,
   *  which should be used for small views, like on mobile.
   *  - `standard` will render the default state.
   * @default 'standard'
   */
  variant?:
    | OverridableStringUnion<'standard' | 'scrollable' | 'fullWidth', TabsPropsVariantOverrides>
    | undefined;
  /**
   * If `true`, the scrollbar is visible. It can be useful when displaying
   * a long vertical list of tabs.
   * @default false
   */
  visibleScrollbar?: boolean | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export interface TabsTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'div',
> {
  props: AdditionalProps & TabsOwnProps;
  defaultComponent: RootComponent;
}

declare const Tabs: OverridableComponent<TabsTypeMap>;

export interface TabsActions {
  updateIndicator(): void;
  updateScrollButtons(): void;
}

export type TabsProps<
  RootComponent extends React.ElementType = TabsTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<TabsTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};
```

### vendor/src/Tab/Tab.d.ts

```ts
import * as React from 'react';

import { SxProps } from '@mui/system';

import { Theme } from '../styles';

import { ExtendButtonBase, ExtendButtonBaseTypeMap } from '../ButtonBase';

import { OverrideProps } from '../OverridableComponent';

import { TabClasses } from './tabClasses';

export interface TabOwnProps {
  /**
   * This prop isn't supported.
   * Use the `component` prop if you need to change the children structure.
   */
  children?: null | undefined;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<TabClasses> | undefined;
  /**
   * If `true`, the component is disabled.
   * @default false
   */
  disabled?: boolean | undefined;
  /**
   * If `true`, the  keyboard focus ripple is disabled.
   * @default false
   */
  disableFocusRipple?: boolean | undefined;
  /**
   * The icon to display.
   */
  icon?: string | React.ReactElement<unknown> | undefined;
  /**
   * The position of the icon relative to the label.
   * @default 'top'
   */
  iconPosition?: 'top' | 'bottom' | 'start' | 'end' | undefined;
  /**
   * The label element.
   */
  label?: React.ReactNode;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
  /**
   * You can provide your own value. Otherwise, we fallback to the child position index.
   */
  value?: any;
  /**
   * Tab labels appear in a single row.
   * They can use a second line if needed.
   * @default false
   */
  wrapped?: boolean | undefined;
}

export type TabTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'div',
> = ExtendButtonBaseTypeMap<{
  props: AdditionalProps & TabOwnProps;
  defaultComponent: RootComponent;
}>;

declare const Tab: ExtendButtonBase<TabTypeMap>;

export type TabProps<
  RootComponent extends React.ElementType = TabTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<TabTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};
```

### vendor/src/TabScrollButton/TabScrollButton.d.ts

```ts
import * as React from 'react';

import { SxProps } from '@mui/system';

import { SlotComponentProps } from '../utils/types';

import { ButtonBaseProps } from '../ButtonBase';

import { Theme } from '../styles';

import SvgIcon from '../SvgIcon';

import { TabScrollButtonClasses } from './tabScrollButtonClasses';

export interface TabScrollButtonStartIconSlotPropsOverrides {}

export interface TabScrollButtonEndIconSlotPropsOverrides {}

export interface TabScrollButtonOwnerState extends TabScrollButtonProps {
  isRtl: boolean;
}

export interface TabScrollButtonProps extends Omit<ButtonBaseProps, 'nativeButton'> {
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<TabScrollButtonClasses> | undefined;
  /**
   * The components used for each slot inside.
   * @default {}
   */
  slots?:
    | {
        StartScrollButtonIcon?: React.ElementType | undefined;
        EndScrollButtonIcon?: React.ElementType | undefined;
      }
    | undefined;
  /**
   * The extra props for the slot components.
   * You can override the existing props or add new ones.
   * @default {}
   */
  slotProps?:
    | {
        startScrollButtonIcon?:
          | SlotComponentProps<
              typeof SvgIcon,
              TabScrollButtonStartIconSlotPropsOverrides,
              TabScrollButtonOwnerState
            >
          | undefined;
        endScrollButtonIcon?:
          | SlotComponentProps<
              typeof SvgIcon,
              TabScrollButtonEndIconSlotPropsOverrides,
              TabScrollButtonOwnerState
            >
          | undefined;
      }
    | undefined;
  /**
   * The direction the button should indicate.
   */
  direction: 'left' | 'right';
  /**
   * If `true`, the component is disabled.
   * @default false
   */
  disabled?: boolean | undefined;
  /**
   * The component orientation (layout flow direction).
   */
  orientation: 'horizontal' | 'vertical';
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export default function TabScrollButton(props: TabScrollButtonProps): React.JSX.Element;
```

## 安装后验收

执行严格类型检查、生产构建和实际交互。检查键盘标签／焦点、原生支持的禁用／错误／只读语义、深浅色、窄屏和减少动画。按真实宿主数据检查回调，不把复制提示词当作安装完成。初始化工具还需检查服务端 HTML 与无告警水合。

## 来源与许可

https://github.com/mui/material-ui/tree/809a7717b4c050ba3f69b75300689f07c050a16e

MIT · @mui/material@9.4.0. 保留上游原始内容与许可证。上游完整原文保留于 vendor/docs，不标为全文中文化。

---

JGuang 全部资源索引: https://jiguang132.com/llms.txt