[docs][data grid] Revise the Data Grid getting started docs

docs/.link-check-errors.txt

@@ -1,3 +1,5 @@
 Broken links found by `docs:link-check` that exist:
 
+- https://mui.com/x/react-data-grid/#premium-plan
+- https://mui.com/x/react-data-grid/getting-started/#feature-comparison
 - https://mui.com/x/react-date-pickers/fields/#accessible-dom-structure

docs/data/data-grid/cells/cells.md

@@ -0,0 +1,70 @@
+# Data Grid - Cells
+
+<p class="description">Learn how to customize the rendered elements and values of a cell.</p>
+
+## Customizing cells
+
+The Data Grid provides several methods for customizing the rendered elements and values of a cell, including `renderCell()`, `valueGetter()`, and `valueFormatter()`.
+This document describes the key differences and specific use cases for each.
+
+### renderCell() function
+
+Use the `renderCell()` function to render any element inside of a cell.
+This is the only way to render a React component inside a cell, and also the only way to customize a cell's behavior—for example, by adding a click handler.
+
+Though powerful, it's also expensive in terms of performance, so it should only be used as a last resort when there are no other means for implementing a specific use case.
+
+Here's an example of a cell that uses `renderCell()` to render a button:
+
+```tsx
+const columns: GridColDef[] = [
+  {
+    field: 'date',
+    headerName: 'Year',
+    renderCell: (params: GridRenderCellParams<any, Date>) => (
+      <strong>
+        {params.value.getFullYear()}
+        <Button
+          variant="contained"
+          size="small"
+          style={{ marginLeft: 16 }}
+          tabIndex={params.hasFocus ? 0 : -1}
+        >
+          Open
+        </Button>
+      </strong>
+    ),
+  },
+];
+```
+
+See [Column definition—Rendering cells](/x/react-data-grid/column-definition/#rendering-cells) for more details.
+
+### valueGetter() function
+
+Use the `valueGetter()` function to derive a cell's value from the row data.
+This is the the most performant way to customize the contents of a cell, and it does so without altering the row data itself.
+
+Common use cases include:
+
+- Transforming a value (for example, converting a decimal value to a percentage value)
+- Deriving a value from multiple fields (for example, concatenating first name and last name)
+- Deriving a value from a nested field (for example, `user.address.city`)
+
+This function is also used internally in the Data Grid to filter, sort, and render (if `renderCell` or `valueFormatter` are not provided).
+
+See [Column definition—Value getter](/x/react-data-grid/column-definition/#value-getter) for more details.
+
+### valueFormatter() function
+
+Use the `valueFormatter()` function to format a cell's value (without changing the underlying row data).
+
+Common use cases include:
+
+- Formatting a date to a custom display format
+- Formatting a decimal value to a percentage and appending a `%` sign
+- Formatting a boolean value to `Yes` or `No`
+
+Unlike `valueGetter()`, this function only impacts rendering—_not_ internal calculations like filtering or sorting.
+
+See [Column definition—value formatter](/x/react-data-grid/column-definition/#value-formatter) for more details.

docs/data/data-grid/demo/PopularFeaturesDemo.js

@@ -32,15 +32,14 @@ import LazyLoadingGrid from '../row-updates/LazyLoadingGrid';
 import BasicGroupingDemo from '../column-groups/BasicGroupingDemo';
 import EditingWithDatePickers from '../custom-columns/EditingWithDatePickers';
 import CellSelectionGrid from '../cell-selection/CellSelectionRangeStyling';
-import AddNewColumnMenuGrid from '../column-menu/AddNewColumnMenuGrid';
 import HeaderFilteringDataGridPro from '../filtering/HeaderFilteringDataGridPro';
 import ClipboardPaste from '../clipboard/ClipboardPaste';
 
 export const featuresSet = [
   {
     id: 1,
     name: 'Master detail',
-    description: 'A parent row with a collapsible child panel',
+    description: 'A parent row with a collapsible child panel.',
     plan: 'Pro',
     detailPage: '/master-detail/',
     demo: <BasicDetailPanels />,
@@ -49,27 +48,25 @@ export const featuresSet = [
   {
     id: 2,
     name: 'Inline editing',
-    description:
-      'Edit your data inside the cells by double-clicking or pressing Enter',
+    description: 'Edit data inside cells by double-clicking or pressing Enter.',
     plan: 'Community',
     detailPage: '/editing/',
     demo: <EditingWithDatePickers />,
     linkToCode: '/recipes-editing/#system-EditingWithDatePickers.tsx',
   },
   {
     id: 3,
-    name: 'Column groups',
-    description: 'Group columns in a multi-level hierarchy',
+    name: 'Column grouping',
+    description: 'Group columns in a multi-level hierarchy.',
     plan: 'Community',
     detailPage: '/column-groups/',
-    newBadge: true,
     demo: <BasicGroupingDemo />,
     linkToCode: '/column-groups/#system-BasicGroupingDemo.tsx',
   },
   {
     id: 4,
     name: 'Lazy loading',
-    description: 'Easily paginate your rows and only fetch what you need',
+    description: 'Paginate rows and only fetch what you need.',
     plan: 'Pro',
     detailPage: '/pagination/',
     demo: <LazyLoadingGrid />,
@@ -79,7 +76,7 @@ export const featuresSet = [
     id: 5,
     name: 'Save and restore state',
     description:
-      'Save and restore internal state and configurations like active filters and sorting',
+      'Save and restore internal state and configurations like active filters and sorting.',
     plan: 'Community',
     detailPage: '/state/#save-and-restore-the-state',
     demo: <RestoreStateInitialState />,
@@ -88,7 +85,7 @@ export const featuresSet = [
   {
     id: 6,
     name: 'Row grouping',
-    description: 'Group rows with repeating column values',
+    description: 'Group rows with repeating column values.',
     plan: 'Premium',
     detailPage: '/row-grouping/',
     demo: <RowGroupingInitialState />,
@@ -97,8 +94,7 @@ export const featuresSet = [
   {
     id: 7,
     name: 'Excel export',
-    description:
-      'Easily export the rows in various file formats such as CSV, PDF or Excel',
+    description: 'Export rows in various file formats such as CSV, PDF or Excel.',
     plan: 'Premium',
     detailPage: '/export/#excel-export',
     demo: <ExcelExport />,
@@ -107,16 +103,16 @@ export const featuresSet = [
   {
     id: 8,
     name: 'Quick filter',
-    description: 'Use a single text input to filter multiple fields',
+    description: 'Use a single text input to filter multiple fields.',
     plan: 'Community',
     detailPage: '/filtering/quick-filter/',
     demo: <QuickFilteringGrid />,
     linkToCode: '/filtering/quick-filter/#system-QuickFilteringGrid.tsx',
   },
   {
     id: 9,
-    name: 'Row reorder',
-    description: 'Drag and drop to reorder your data',
+    name: 'Row reordering',
+    description: 'Drag and drop to reorder data.',
     plan: 'Pro',
     detailPage: '/row-ordering/',
     demo: <RowOrderingGrid />,
@@ -125,7 +121,7 @@ export const featuresSet = [
   {
     id: 10,
     name: 'Column Pinning',
-    description: 'Pin your columns to the left or right',
+    description: 'Pin columns to the left or right.',
     plan: 'Pro',
     detailPage: '/column-pinning/',
     demo: <BasicColumnPinning />,
@@ -134,7 +130,7 @@ export const featuresSet = [
   {
     id: 11,
     name: 'Row pinning',
-    description: 'Pin your rows up or down',
+    description: 'Pin rows to the top or bottom of the Grid.',
     plan: 'Pro',
     detailPage: '/row-pinning/',
     demo: <RowPinningWithPagination />,
@@ -143,7 +139,7 @@ export const featuresSet = [
   {
     id: 12,
     name: 'Aggregation and Summary rows',
-    description: 'Set summary footer rows or inline summaries with row grouping',
+    description: 'Set summary footer rows or inline summaries with row grouping.',
     plan: 'Premium',
     detailPage: '/aggregation/',
     demo: <AggregationRowGrouping />,
@@ -152,8 +148,7 @@ export const featuresSet = [
   {
     id: 13,
     name: 'Column visibility',
-    description:
-      'Display different columns in different use cases by defining which columns are visible',
+    description: 'Display different columns for different use cases.',
     plan: 'Community',
     detailPage: '/column-visibility/',
     demo: <ColumnSelectorGrid />,
@@ -162,7 +157,7 @@ export const featuresSet = [
   {
     id: 14,
     name: 'Column virtualization',
-    description: 'High performance support for thousands of columns',
+    description: 'High-performance support for thousands of columns.',
     plan: 'Community',
     detailPage: '/virtualization/#column-virtualization',
     demo: <ColumnVirtualizationGrid />,
@@ -171,15 +166,15 @@ export const featuresSet = [
   {
     id: 15,
     name: 'Row virtualization',
-    description: 'High performance support for vast volume of data',
+    description: 'High-performance support for large volumes of data.',
     plan: 'Pro',
     detailPage: '/virtualization/#row-virtualization',
     demo: <FullFeaturedDemo />,
   },
   {
     id: 16,
     name: 'Tree data',
-    description: 'Support rows with parent / child relationship',
+    description: 'Support rows with a parent/child relationship.',
     plan: 'Pro',
     detailPage: '/tree-data/',
     demo: <TreeDataFullExample />,
@@ -189,44 +184,31 @@ export const featuresSet = [
     id: 17,
     name: 'Cell selection',
     description:
-      'Allow users to select individual and multiple cells with mouse dragging and/or keyboard (using shift key)',
+      'Select one or more cells by dragging the mouse or using the Shift key.',
     plan: 'Premium',
     detailPage: '/cell-selection/',
     demo: <CellSelectionGrid />,
     linkToCode: '/cell-selection/#system-CellSelectionGrid.tsx',
-    newBadge: true,
   },
   {
     id: 18,
-    name: 'Column menu',
-    description: 'More customization and improved design on v6',
-    plan: 'Community',
-    detailPage: '/column-menu/',
-    demo: <AddNewColumnMenuGrid />,
-    linkToCode: '/column-menu/#system-AddNewColumnMenuGrid.tsx',
-    newBadge: true,
-  },
-  {
-    id: 19,
     name: 'Clipboard paste',
     description:
-      'Copy and paste the selected cells and rows using the copy/paste keyboard shortcuts.',
+      'Copy and paste selected cells and rows using standard keyboard shortcuts.',
     plan: 'Premium',
     detailPage: '/clipboard/#clipboard-paste',
     demo: <ClipboardPaste />,
     linkToCode: '/clipboard/#system-ClipboardPaste.tsx',
-    newBadge: true,
   },
   {
-    id: 20,
+    id: 19,
     name: 'Header filters',
     description:
-      'Quickly accessible and customizable header filters to filter the data',
+      'Quickly accessible and customizable header filters to filter the data.',
     plan: 'Pro',
     detailPage: '/filtering/#header-filters',
     demo: <HeaderFilteringDataGridPro />,
     linkToCode: '/filtering/header-filters/#system-HeaderFilteringDataGridPro.tsx',
-    newBadge: true,
   },
 ];
 
@@ -419,7 +401,7 @@ const columns = [
   },
   {
     field: 'description',
-    headerName: 'Brief description',
+    headerName: 'Description',
     groupable: false,
     flex: 0.5,
     minWidth: 120,