diff --git a/ROADMAP.md b/ROADMAP.md
index 9cdde5674..86f8421a6 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~15 points (60% → 75% ready for real work) and ~150–230 h away
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** trivial (large-table scrolling, #811; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** trivial (the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 
 WordCraft aims for complete parity with Microsoft Word, then goes further on speed, openness and
 agent control. This page is the summary; the assessment is
@@ -172,6 +172,7 @@ Ranked, to beta (detail and remaining milestones in [docs/roadmap.md](docs/roadm
 |---|---|
 | 2026-10-11 | Table border drags like Word's (#711): Ctrl shares a column border's change among the columns right of it (the table keeps its width), the table's left edge moves a left-aligned table's indent (a centred or right-aligned table keeps its alignment, as in Word), a border of cells selected across moves only in their rows, and Alt shows the column widths on the ruler |
 | 2026-10-11 | Tables on the rulers (#700): with the caret in a table the horizontal ruler marks its row's column borders and the vertical ruler its rows' bottoms; dragging a marker resizes the column (the columns right of it move along; with Shift the neighbour makes up the difference) or the row, one undo step, Escape cancels; in a cell the indents and tabs are measured from the cell |
+| 2026-10-12 | Save Changes prompt answers from the keyboard: Save has focus when it opens; arrow keys and Tab move between Save, Don't Save and Cancel; Enter answers (#861) |
 | 2026-10-12 | Builds with craft-fonts draw simplified-Chinese characters in documents from the bundled Noto Sans CJK SC (it was only used by the interface), so a CJK run gets one face covering it; fixes the FreeBSD job's `east_asian_run_uses_one_face_covering_the_whole_run` failure after #567 |
 | 2026-10-12 | AutoCorrect capitals (#544): Correct TWo INitial CApitals (with exceptions), accidental cAPS LOCK, first letter of table cells; each undoable and switchable |
 | 2026-10-11 | Turkish (`tr`) interface completed (#774): 2,325 entries, every key of the Russian catalog (equation gallery, built-in style names, watermarks, paper sizes, preview tiles); the interface audit checks Turkish too |
@@ -271,6 +272,7 @@ Ranked, to beta (detail and remaining milestones in [docs/roadmap.md](docs/roadm
 | 2026-10-12 | trivial | Progress log: Start screen at launch (#766) |
 | 2026-10-12 | trivial | Progress log: Alt+Q command search (#819); log table header fixed |
 | 2026-10-12 | trivial | Progress log: ribbon groups fit above their labels |
+| 2026-10-12 | trivial | Progress log: save prompt from the keyboard (#861) |
 | 2026-10-12 | trivial | Progress log: craft-fonts Simplified Chinese in documents |
 | 2026-10-11 | trivial | Progress log and shipped languages: Turkish interface completed, 2,325 entries (#774) |
 | 2026-10-12 | trivial | Progress log: Navigation heading truncation (#759) |
diff --git a/crates/ui-egui/src/dialogs.rs b/crates/ui-egui/src/dialogs.rs
index edff600cf..975ff9012 100644
--- a/crates/ui-egui/src/dialogs.rs
+++ b/crates/ui-egui/src/dialogs.rs
@@ -2359,6 +2359,14 @@ fn body(app: &mut WordApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                 .inner
             });
             let buttons = buttons.inner;
+            // The keyboard alone answers, as in Word (#861): Save has focus when the prompt opens,
+            // so Enter saves, and the arrow keys (egui's focus navigation) or Tab move between the
+            // buttons, shown as Save, Don't Save, Cancel.
+            if ui.memory(|m| m.focused().is_none())
+                && let Some((save, _)) = buttons.get(2)
+            {
+                save.request_focus();
+            }
             // Enter clicks the focused button; it means Save only when none of them has focus.
             let focused = buttons.iter().any(|(b, _)| b.has_focus());
             let answer = if ui.input(|i| i.key_pressed(egui::Key::Escape)) {
diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index ff17bc413..88c74041d 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -2838,6 +2838,59 @@ mod tests {
         }
     }
 
+    /// #861: the save prompt answers from the keyboard alone. Save has focus when it opens, and
+    /// Left/Right move the focus between Save, Don't Save and Cancel (stopping at the ends).
+    #[test]
+    fn arrow_keys_choose_the_save_prompt_answer() {
+        use egui_kittest::kittest::Queryable;
+        for (arrows, focused, quits, saves) in [
+            (vec![egui::Key::ArrowLeft], "Save", true, true),
+            (vec![egui::Key::ArrowRight], "Don't Save", true, false),
+            (vec![egui::Key::ArrowRight, egui::Key::ArrowRight, egui::Key::ArrowRight], "Cancel", false, false),
+            (vec![egui::Key::ArrowRight, egui::Key::ArrowRight, egui::Key::ArrowLeft], "Don't Save", true, false),
+        ] {
+            let dir = scratch(&format!("arrows-{}-{}", arrows.len(), focused.len()));
+            let path = docx_on_disk(&dir, "Draft");
+            let before = std::fs::read(&path).unwrap();
+            let mut a = app();
+            a.run("file.open", json!({"path": path.to_string_lossy()})).unwrap();
+            a.run("text.insert", json!({"text": "Revised "})).unwrap();
+            a.run("file.close", json!({})).unwrap();
+            assert_eq!(prompt(&a), Some("saveChanges"));
+            let mut fonts = false;
+            let mut h = egui_kittest::Harness::builder().build_ui_state(
+                move |ui, app: &mut WordApp| {
+                    let ctx = ui.ctx().clone();
+                    if fonts {
+                        dialogs::show(app, &ctx);
+                    } else {
+                        theme::install_fonts_for(&ctx, false);
+                        fonts = true;
+                    }
+                },
+                a,
+            );
+            for _ in 0..3 {
+                h.step();
+            }
+            assert!(h.get_by_label("Save").is_focused(), "Save has focus when the prompt opens");
+            for key in &arrows {
+                h.key_press(*key);
+                h.step();
+            }
+            assert!(h.get_by_label(focused).is_focused(), "{arrows:?}: {focused} has focus");
+            h.key_press(egui::Key::Enter);
+            for _ in 0..3 {
+                h.step();
+            }
+            let a = h.state();
+            assert_eq!(prompt(a), None, "{arrows:?}: answered");
+            assert_eq!(a.quit_requested, quits, "{arrows:?}: quit");
+            assert_eq!(std::fs::read(&path).unwrap() != before, saves, "{arrows:?}: file written");
+            let _ = std::fs::remove_dir_all(&dir);
+        }
+    }
+
     /// `ui.print` hands the document's PDF to the host's print hook, and is an error (with
     /// nothing printed) when the host has none.
     #[test]
diff --git a/docs/ui-parity.md b/docs/ui-parity.md
index deeaef2f1..37e32999d 100644
--- a/docs/ui-parity.md
+++ b/docs/ui-parity.md
@@ -1,6 +1,6 @@
 # UI parity with Microsoft Word
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** trivial (table border drags with Ctrl and Alt, from the left edge and of selected cells, #711; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously major: first version; ribbon, dialogs, shortcuts and on-canvas interaction measured from `crates/ui-egui` and the command registry) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** trivial (the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously major: first version; ribbon, dialogs, shortcuts and on-canvas interaction measured from `crates/ui-egui` and the command registry) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 
 How WordCraft looks and feels next to Word: ribbon, dialogs, panes, keyboard, mouse and touch.
 Typing behaviour has its own checklist ([`typing-parity.md`](typing-parity.md)). All assets are our
@@ -54,6 +54,7 @@ own (`AGENTS.md`: no Microsoft iconography, ever).
 | 2026-10-12 | trivial | Alt+Q moves to "Tell me" command search, as in Word for Windows (#819) |
 | 2026-10-12 | trivial | Ribbon groups fit above their labels: View › Show puts Hide White Space (#645) in a second column instead of a fourth row over the "Show" label; Developer › Controls drops the gaps that pushed it into its label; Layout › Paragraph (#654) puts its column gap inside cells (no `add_space` in the grid, a debug assertion) and 1.5 pt between rows so it fits; `ribbon_groups_fit_above_their_labels` checks every tab in every language |
 | 2026-10-12 | trivial | Window caption: a file name in a script the interface fonts lack (Hebrew, Arabic, and the rest; CJK via the CJK UI font) is drawn with a fallback face instead of `?` |
+| 2026-10-12 | trivial | Save Changes prompt: Save has focus when it opens, so Enter, Tab and the arrow keys answer without the mouse (#861) |
 | 2026-10-12 | trivial | Navigation headings truncate with an ellipsis within the pane width, preserving resizing and full-text hover (#759) |
 | 2026-10-11 | minor | Reading Mode: viewport-height horizontal columns, animated paging, transient display controls, heading navigation and responsive anchored resizing |
 | 2026-10-11 | trivial | Alt activation handles native key/modifier events in either order, including key-up with the old Alt flag; taps toggle once, chords and focus loss do not activate KeyTips |