diff --git a/ROADMAP.md b/ROADMAP.md
index 28c52d9..2dba0e2 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -133,6 +133,7 @@ app's JSON control channel (`deckcraft --control PORT`).
 | 2026-10-12 | Selection Pane like PowerPoint (#133): front-most first, groups fold, drag and drop restacks among siblings, Bring Forward / Send Backward, Show All / Hide All, eye, rename in place, keyboard; Lock (pane padlock, canvas menu) keeps objects from moving, sizing or rotating and round-trips PowerPoint's locking attributes |
 | 2026-10-12 | Text keys like PowerPoint for Windows (#268): Ctrl+arrows and Ctrl+Shift+arrows by word (punctuation, CJK, emoji, RTL), Ctrl+Backspace/Delete with smart spacing, Ctrl+Up/Down by paragraph, Ctrl+Home/End, End on wrapped lines, Ctrl+]/[ and Ctrl+Shift+>/< font size, Shift+F3 case cycle, word and paragraph selection |
 | 2026-10-12 | EMF/WMF pictures draw their text (fonts, alignment, dx advances, escapement, symbol fonts), pattern and hatch brushes, PATBLT and the XOR/AND see-through shadow; legacy OLE objects show their VML preview and ActiveX controls their pictures |
+| 2026-10-12 | File tab (Backstage) like PowerPoint's (#76): File or Alt+F opens Home, New, Open, Info, Save, Save As, Print, Export, Close, Account and Options over the window, Esc or Back returns, arrows walk the side menu; the start screen is File › Home. Pages run the existing file commands; new `file.info`, print slide ranges (`"1-3, 5"`), Print through a PDF, Ctrl+P, and Close/Ctrl+W ask about unsaved changes |
 | 2026-10-12 | WordArt text warps (`prstTxWarp`): all 40 presets drawn, curves fitted to PowerPoint by observation; warp adjusts round-trip |
 | 2026-10-12 | Render: line widths, dashes and arrowheads inside a group no longer scale with the group's child-coordinate mapping, so a group in a small legacy child space (scale about 1600) draws thin lines instead of covering the slide (#233) |
 | 2026-10-10 | Progress docs restructured to the craftrules standard; full re-measure (breadth 79%, ready ~55%, mainstream ~53%, essentials ~62%, alpha). Landed: Animation Painter (#54), Morph geometry outlines (#27), animated GIF playback (#39), hyperlink colour and following links in the show (#37, #45), date fields in their own format (#36), flipped shapes keep readable text (#35), show transition fix (#46), start screen from the Home button (#49), MCP export lists PDF (#65), OmaStore manifest (#57) |
@@ -146,6 +147,7 @@ app's JSON control channel (`deckcraft --control PORT`).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | trivial | Progress log: File tab (Backstage, #76) |
 | 2026-10-12 | trivial | Progress log: lines in scaled groups (#233) |
 | 2026-10-10 | minor | Readiness-by-audience table with hours to ~95% for full, mainstream and essentials |
 | 2026-10-10 | minor | Added mainstream practitioner (~53%) and essentials user (~62%); features recomputed from written area weights, ready ~56% → ~55% |
diff --git a/docs/control-protocol.md b/docs/control-protocol.md
index 46c77ae..07741fd 100644
--- a/docs/control-protocol.md
+++ b/docs/control-protocol.md
@@ -15,7 +15,7 @@ Coordinates are slide points (1/72 inch; a 16:9 slide is 960 × 540) unless note
 | `engine.execute` / `ui.menu.invoke` / `command` | `{command, params}` | Run any command (see `engine.commands`; `deckcraft-cli describe ID` documents one) |
 | `engine.commands` | — | Every command: id, label, menu path, shortcut, params doc, enabled / disabled reason |
 | `document.inspect` | — | Slides, sections, layouts, shapes, selection |
-| `ui.inspect` | — | UI state, active tool, window/canvas/slide rects, dialog, Home (start screen over the open presentations), slide show state, documents, perf (fps, render ms) |
+| `ui.inspect` | — | UI state, active tool, window/canvas/slide rects, dialog, `home` (the File tab open over a presentation), `backstage` (its page, also the start screen), slide show state, documents, perf (fps, render ms) |
 | `ui.tool.select` | `{tool, preset?}` | `select`, `text`, `shape` + preset, any preset name, `curve`, `freeform`, `scribble`, `pen`, `highlighter`, `eraser` |
 | `ui.pointer` | `{events: [{kind: down\|drag\|up\|move\|doubleclick\|tripleclick, x, y, mods?}], mods?}` | Drive the active tool in slide points through the same code path as the mouse |
 | `ui.key` / `ui.text` | `{key, shift?, alt?, cmd?}` / `{text}` | Keyboard input (also drives a running slide show) |
diff --git a/docs/gaps.md b/docs/gaps.md
index 1d35223..d14700b 100644
--- a/docs/gaps.md
+++ b/docs/gaps.md
@@ -197,8 +197,8 @@ Detail in [ui-parity.md](ui-parity.md).
   blocker.**
 - **Format Shape pane thinner than PowerPoint's** (Fill/Line/Effects/Size/Text Box pages, picture
   and texture options, 3-D). 6–10 h. **Beta blocker.**
-- **First-run and start screen** (#17, #76: missing File overlay, broken layout; recent files and
-  templates thin). 3–5 h.
+- **File tab depth** (#76 landed the Backstage): no online templates, cloud places, printer
+  choice, video/GIF/CD exports or document protection. 4–8 h for the parts that need no cloud.
 - **Window chrome** (#71 macOS controls misaligned, #26 GNOME title bar, #41 system light/dark).
   2–4 h.
 - **Icon consistency across Craft apps** (#73, #56). 2–4 h; coordinate in craftrules.
diff --git a/docs/parity-checklist.md b/docs/parity-checklist.md
index bfd5c07..b4fa71d 100644
--- a/docs/parity-checklist.md
+++ b/docs/parity-checklist.md
@@ -7,13 +7,13 @@ The summary between `<!-- SUMMARY -->
 
 | Priority | Features | Done | Partial | Missing | Parity |
 |---|---|---|---|---|---|
-| P0 | 72 | 60 | 12 | 0 | 92% |
+| P0 | 72 | 61 | 11 | 0 | 92% |
 | P1 | 65 | 38 | 21 | 6 | 75% |
 | P2 | 54 | 13 | 14 | 27 | 37% |
 
 | Area | Parity |
 |---|---|
-| Application shell | 71% |
+| Application shell | 77% |
 | Files | 71% |
 | Slides | 90% |
 | Views | 90% |
@@ -36,13 +36,13 @@ The summary between `<!-- SUMMARY -->
 | Automation (✱) | 100% |
 | Platforms (✱) | 67% |
 
-Open P0 items: Start screen (new, templates/themes, recent), Contextual tabs (Shape Format, Picture Format, Table Design/Layout, Chart Design), Export to PDF (slides, notes pages, handouts; text layer, links, bookmarks; vector artwork pending), Format Shape pane, Font, size, bold, italic, underline, strikethrough (only Regular/Bold/Italic faces, #69), Edit chart data, Crop (and crop to shape, aspect ratio), Paste image from clipboard (fails on Windows and Linux, #53), Audio/video playback in the show (WMA/WMV not decodable yet), Animation pane (reorder, timing), Presenter view (notes, next slide, timer), macOS, Windows, Linux builds.
+Open P0 items: Contextual tabs (Shape Format, Picture Format, Table Design/Layout, Chart Design), Export to PDF (slides, notes pages, handouts; text layer, links, bookmarks; vector artwork pending), Format Shape pane, Font, size, bold, italic, underline, strikethrough (only Regular/Bold/Italic faces, #69), Edit chart data, Crop (and crop to shape, aspect ratio), Paste image from clipboard (fails on Windows and Linux, #53), Audio/video playback in the show (WMA/WMV not decodable yet), Animation pane (reorder, timing), Presenter view (notes, next slide, timer), macOS, Windows, Linux builds.
 
 ## Rows
 
 | Area | Feature | Priority | Status |
 |---|---|---|---|
-| Application shell | Start screen (new, templates/themes, recent) | P0 | P |
+| Application shell | Start screen (new, templates/themes, recent) | P0 | D |
 | Application shell | Ribbon with Home/Insert/Draw/Design/Transitions/Animations/Slide Show/Review/View tabs | P0 | D |
 | Application shell | Contextual tabs (Shape Format, Picture Format, Table Design/Layout, Chart Design) | P0 | P |
 | Application shell | Quick Access toolbar / title bar commands | P1 | P |
diff --git a/docs/ui-parity.md b/docs/ui-parity.md
index 065040e..c403f05 100644
--- a/docs/ui-parity.md
+++ b/docs/ui-parity.md
@@ -1,6 +1,6 @@
 # UI parity with PowerPoint
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (off-slide objects in Normal view, #270) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (File tab / Backstage, #76; previous: off-slide objects in Normal view, #270) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 > **Last reviewed:** 2026-10-12 · **Last updated:** 2026-10-12 · **Change:** minor (text editing keys observed in PowerPoint for Windows, #268) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
@@ -18,13 +18,42 @@ AGENTS.md §2). Dimension score: **~60% ready** (estimated), **30–50 h** to pa
 | Menu-bar items with a DeckCraft equivalent | 217 app-specific items | 128 matched by name (59%, heuristic lower bound) | See [target-app-parity.md](target-app-parity.md) |
 | Ribbon tabs: Home, Insert, Draw, Design, Transitions, Animations, Slide Show, Record, Review, View | 10 | 10 | Record tab is a placeholder |
 | Contextual tabs: Shape Format, Picture Format, Table Design, Table Layout, Chart Design, Chart Format, Video/Audio Format and Playback | yes | most; checklist P0 row partial | Chart Format, media tabs thinner |
-| Start screen: new, themes, templates, recent, open | yes | yes, thin (#17 broken layout, #76 missing overlay) | 3–5 h |
+| File tab (Backstage): Home, New, Open, Info, Save, Save As, Print, Share, Export, Close, Account, Options | yes | yes (#76), see [File tab](#file-tab-backstage); no Share (cloud) | Video/GIF/CD exports, templates beyond the built-in themes |
+| Start screen: new, themes, templates, recent, open | yes, the same page as File › Home | yes: File › Home with Home, New, Open, Account and Options (#76) | |
 | Status bar: slide counter, language, notes, comments, views, zoom slider | yes | yes | |
 | Command search (Tell Me) | yes | command palette | #79 default entry fails |
 | Light / dark appearance | follows the system | light or dark; doesn't follow the system (#41) | 1–2 h |
 | One window per presentation, New Window, Arrange All | yes | tabs in one window; no New Window | 3–5 h |
 | Quick Access Toolbar customization | yes | no | P1 partial |
 
+## File tab (Backstage)
+
+Observed black-box in PowerPoint for Windows (Microsoft 365, Version 2609, October 2026) on a
+synthetic presentation. Clicking **File** (or Alt+F) replaces the ribbon, slides and status bar with
+a full-window view; the title bar stays. A side menu 160 points wide, a step darker than the page,
+lists Back (a circled arrow), Home, New, Open, Share, a rule, Info, Save, Save As, Print, Export,
+Close and, at the bottom under a rule, Account and Options. Entries are 40 points tall with an
+outline icon; the current page is drawn in the accent colour and outlined. Esc goes back. Alt+F opens
+on Home with the keyboard in the side menu; Up and Down move through it and a page shows as soon as
+its entry has the focus. PowerPoint's start screen is the same Home page, with only Home, New and
+Open at the top. DeckCraft follows all of this (`crates/ui-egui/src/backstage.rs`), with the page and
+menu colours taken from the theme tokens (menu `chrome`, page `card`).
+
+| Page | PowerPoint | DeckCraft |
+|---|---|---|
+| Home | Prompt box (Copilot), New row of themes with More themes, Recent / Favorites / Shared with Me with a file search, More presentations | DeckCraft's mark, Blank Presentation and the first themes with More themes →, Recent with a file search and More presentations → (to Open). No Copilot prompt, Favorites or Shared with Me |
+| New | Blank Presentation, template search with suggested searches, gallery of online templates and themes | Blank Presentation, search box, the built-in themes and the sample deck (`file.new {theme}`). No online templates |
+| Open | Recent, Shared with Me, OneDrive, This PC, Add a Place, Browse; Presentations / Folders; Recover Unsaved Presentations | Recent and Browse (`app.openDialog`), recent presentations with a search box (`file.open`), Recover Unsaved Presentations (`file.recovery.open`). No cloud places or Folders tab |
+| Info | Name and path, Upload / Share / Copy path / Open file location; Protect, Inspect, Version History, Manage Presentation; Properties, Related Dates, Related People | Name and path, Copy path, Open file location; Inspect Presentation (Accessibility Checker), Manage Presentation (Revert); Size, Slides, Hidden slides and editable Title, Subject, Tags, Categories, Company, Comments, Author (`file.info`, `file.properties`). No Protect, Version History or dates |
+| Save | Saves; a presentation never saved goes to Save As | Same (`file.save`) |
+| Save As | Places, folder, file name, type, Save, More options | Type (PowerPoint, DeckCraft, PDF, Outline, PNG, JPEG) and Save, which opens the system Save dialog (web: Download). .pptx/.deckcraft take the new file; the others are copies (`file.saveAs`, `file.export`) |
+| Print | Print and Copies, Printer, Print All / Selection / Current / Custom Range, Slides box, layout (Full Page Slides, Notes Pages, Outline, Handouts 1–9), sides, collation, colour, Edit Header & Footer; page preview with pager and zoom | Print, Print All Slides / Current Slide / Custom Range, Slides box (`1-3, 5`), Full Page Slides / Notes Pages / Handouts 1–9, Print Hidden Slides, Frame Slides, Edit Header & Footer; preview with pager. DeckCraft prints through a PDF (`file.export`) opened in the system viewer, which has the printers (web: downloaded). No printer list, copies, sides or colour |
+| Share | Cloud sharing | Not offered |
+| Export | Create PDF/XPS Document, Create a Video, Create an Animated GIF, Package Presentation for CD, Create Handouts, Change File Type | Create PDF Document, Create Handouts (a PDF), Change File Type. No video, GIF or CD package |
+| Close | Closes; asks Save / Don't Save / Cancel about unsaved changes | Same (`file.close` after the prompt); Ctrl+W asks too |
+| Account | User information, sign-in, Office Background and Office Theme, product information, About | Appearance (light/dark, `view.dark`), product information, About DeckCraft. No accounts to sign in to |
+| Options | Opens the PowerPoint Options dialog | Opens Preferences |
+
 ## Panes and dialogs
 
 | Pane / dialog | PowerPoint | DeckCraft |
@@ -109,7 +138,7 @@ imitate Microsoft's. No pixel comparison against PowerPoint screenshots has been
 | Native macOS menu bar from `menu_tree()`, filled out to PowerPoint's menu items | 3–5 |
 | Format Shape pane depth | 6–10 |
 | Missing dialogs (Font, Bullets and Numbering, Find/Replace, Replace Fonts, Action Settings, Print, Insert Object) | 8–14 |
-| Start screen, window chrome, system appearance, palette fixes (#17, #41, #71, #76, #79) | 4–7 |
+| Window chrome, system appearance, palette fixes (#41, #71, #79) | 3–5 |
 | Grid Options, edit points UI, crop depth | 4–7 |
 | Multiple windows | 3–5 |
 | A screenshot comparison pass on the most-used tabs | 2–4 |
@@ -119,6 +148,7 @@ imitate Microsoft's. No pixel comparison against PowerPoint screenshots has been
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | File tab (Backstage) observed in PowerPoint for Windows and matched (#76); the start screen is File › Home |
 | 2026-10-12 | minor | Off-slide objects drawn and editable around the slide in Normal view (#270) |
 | 2026-10-12 | minor | Selection Pane matched to PowerPoint (#133): drag and drop, arrows, groups, eye, Lock |
 | 2026-10-12 | minor | Text editing keys: Ctrl+arrows, Ctrl+Backspace/Delete, Ctrl+Up/Down, Home/End on wrapped lines, Shift+F3, font size keys, as observed in PowerPoint for Windows (#268) |