diff --git a/ROADMAP.md b/ROADMAP.md
index f7d3c9811..66da69e4a 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -4,7 +4,7 @@
 
 **Stage: alpha** · next: beta, ~25% (ready for real work 50% → 75%) and ~400–700 h away
 
-> **Last reviewed:** 2026-10-18 · **Last updated:** 2026-10-18 · **Change:** minor (M5, PR #1971: bounded nested FDF export excludes source page/page-tree dictionaries; refreshed against upstream 4db6ac4a; estimates unchanged)
+> **Last reviewed:** 2026-10-20 · **Last updated:** 2026-10-20 · **Change:** minor (M4: initial-view options resolve indirect boolean preferences; estimates unchanged)
 > **Last reviewed:** 2026-10-15 · **Last updated:** 2026-10-15 · **Change:** minor (M7: the Edit text caret is as tall as the row it is on; estimates unchanged) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
 > **Last reviewed:** 2026-10-15 · **Last updated:** 2026-10-15 · **Change:** minor (M6: CSV tab-containing headers; estimates unchanged)
 > **Last reviewed:** 2026-10-18 · **Last updated:** 2026-10-18 · **Change:** minor (M3, #3149: discard render demand after page geometry changes and check the GPU texture limit before upload; estimates unchanged)
@@ -174,6 +174,7 @@ Ranked; detail and the full milestone table in [docs/roadmap.md](docs/roadmap.md
 
 ## Progress log
 
+- **2026-10-20 (M4, initial view):** Window and interface options read indirect boolean ViewerPreferences values. Synthetic regressions cover true/false, direct/indirect preference dictionaries and save/reopen; malformed entries retain false defaults. Estimates unchanged.
 - **2026-10-20 (M3, #3535):** Escape with a menu open closes the menu and keeps the text selection; the next Escape clears it, as before. One keypress used to do both. A synthetic UI regression checks it. Estimates unchanged.
 - **2026-10-16 (M3, close prompt keyboard):** The "Save changes?" prompt opens with Save chosen (Enter saves, as before) and the arrow keys and Tab / Shift+Tab move the choice to Cancel or Don't save, shown with a focus ring; Enter or Space press the chosen button and Escape still cancels. Before, Enter always saved whatever was Tab-focused. Estimates unchanged.
 - **2026-10-21 (M3, #3808):** Page thumbnails in the Inspector can be resized independently from the document and Organize, with a slider, buttons and `thumbnail-zoom` control option. Selection, page following and reload are covered by regressions. Estimates unchanged.
@@ -564,6 +565,7 @@ Newest first: the date, what moved, and the new overall estimate.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-20 | minor | M4: initial-view window and interface options resolve indirect boolean ViewerPreferences values; synthetic true/false and save/reopen regressions retain defaults for malformed entries. Estimates unchanged. |
 | 2026-10-18 | minor | M5, PR #1971: nested source `/Page` and `/Pages` dictionaries export as null without traversing page content or the page tree. Synthetic saved/reopened three-page regression retains unrelated metadata and aliases. FDF import semantics, copied-graph limits and estimates unchanged. |
 | 2026-10-15 | minor | M5: budget retained FDF entries before cloning; discovery keeps lazy array owners and annotation positions, with alias/cache-eviction stress fixtures. Limits cover the copied graph; source parsing/page discovery retain existing COS/parser limits, with no total source-memory bound. FDF import semantics and estimates unchanged. |
 | 2026-10-15 | minor | M7: the Edit text caret is as tall as the row it is on in a region with several sizes; estimates unchanged. |
diff --git a/crates/organize/src/view.rs b/crates/organize/src/view.rs
index efca2ce4d..0f115d305 100644
--- a/crates/organize/src/view.rs
+++ b/crates/organize/src/view.rs
@@ -96,7 +96,7 @@ pub fn initial_view(doc: &Document) -> InitialView {
         ..InitialView::default()
     };
     if let Some(vp) = c.get(b"ViewerPreferences").map(|o| doc.resolve(o)).and_then(|o| o.as_dict().cloned()) {
-        let flag = |k: &[u8]| matches!(vp.get(k), Some(Object::Bool(true)));
+        let flag = |k: &[u8]| matches!(vp.get(k).map(|o| doc.resolve(o)).as_deref(), Some(Object::Bool(true)));
         v.fit_window = flag(b"FitWindow");
         v.center_window = flag(b"CenterWindow");
         v.display_title = flag(b"DisplayDocTitle");
@@ -248,3 +248,50 @@ pub fn set_initial_view(doc: &mut Document, v: &InitialView) -> Result<(), Organ
     })?;
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pdfcraft_cos::{SaveOptions, write_full};
+    use std::sync::Arc;
+
+    fn flags(view: InitialView) -> [bool; 6] {
+        [view.fit_window, view.center_window, view.display_title, view.hide_menubar, view.hide_toolbar, view.hide_window_ui]
+    }
+
+    #[test]
+    fn initial_view_resolves_indirect_boolean_preferences() {
+        let keys: [&[u8]; 6] = [b"FitWindow", b"CenterWindow", b"DisplayDocTitle", b"HideMenubar", b"HideToolbar", b"HideWindowUI"];
+        for enabled in [true, false] {
+            for indirect_dictionary in [false, true] {
+                let mut doc = Document::new_empty();
+                let boolean = doc.add(Object::Bool(enabled));
+                let mut preferences = Dict::new();
+                for key in keys {
+                    preferences.set(key.to_vec(), Object::Ref(boolean));
+                }
+                let preferences = if indirect_dictionary { Object::Ref(doc.add(preferences)) } else { Object::Dict(preferences) };
+                let root = doc.root().unwrap();
+                doc.update_dict(root, |c| c.set(b"ViewerPreferences".to_vec(), preferences)).unwrap();
+                assert_eq!(flags(initial_view(&doc)), [enabled; 6]);
+                let saved = write_full(&doc, &SaveOptions::default()).unwrap();
+                let reopened = Document::open(Arc::new(saved)).unwrap();
+                assert_eq!(flags(initial_view(&reopened)), [enabled; 6]);
+                assert_eq!(displays_doc_title(&reopened), enabled);
+            }
+        }
+    }
+
+    #[test]
+    fn initial_view_malformed_boolean_preferences_keep_false_defaults() {
+        for value in [Object::Null, Object::Int(1), Object::name("true"), Object::Ref(pdfcraft_cos::ObjRef::new(999_999, 0))] {
+            let mut doc = Document::new_empty();
+            let value = doc.add(value);
+            let mut preferences = Dict::new();
+            preferences.set(b"FitWindow".to_vec(), Object::Ref(value));
+            let root = doc.root().unwrap();
+            doc.update_dict(root, |c| c.set(b"ViewerPreferences".to_vec(), Object::Dict(preferences))).unwrap();
+            assert_eq!(flags(initial_view(&doc)), [false; 6]);
+        }
+    }
+}
diff --git a/docs/roadmap.md b/docs/roadmap.md
index 7f7ce1595..7485f263a 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -1,5 +1,6 @@
 # PdfCraft roadmap: milestones and what's next
 
+> **Last reviewed:** 2026-10-20 · **Last updated:** 2026-10-20 · **Change:** minor (M4: initial-view options resolve indirect boolean preferences; estimates unchanged)
 > **Last reviewed:** 2026-10-21 · **Last updated:** 2026-10-21 · **Change:** minor (M3, #3808: the Pages inspector has an independent 50–150% thumbnail size slider and buttons; selection and current-page following are retained, with headless ui.set coverage. Estimates unchanged.)
 
 > **Last reviewed:** 2026-10-18 · **Last updated:** 2026-10-18 · **Change:** minor (M5, PR #1971: bounded nested FDF export excludes source page/page-tree dictionaries; refreshed against upstream 4db6ac4a; estimates unchanged)
@@ -127,7 +128,7 @@ total matches the parity estimate.
 | M2 | Model, render, text | 200–350 | 15% | 130–230 | hayro bootstrap renderer (vendored patches); inspector predictor scratch is bounded by available input, and JPX sample rescaling handles 1–32 bits safely. Text extraction reaches word-F1 0.98 against pdftotext. Short same-line redraws split before placement rather than interleaving. A custom text match that ends on a reconstructed separator stops before the next glyph (#1315). Missing: model crate, fonts, DisplayList, renderer independent of hayro. Inspector page-label traversal and output are resource-bounded, with physical-number fallback warnings |
 | M2 | Model, render, text | 200–350 | 15% | 130–230 | hayro bootstrap renderer (vendored patches); Lab Bradford adaptation uses LMS white-point ratios, covered by independent neutral/chromatic and direct/Indexed render oracles; inspector predictor scratch is bounded by available input, and JPX sample rescaling handles 1–32 bits safely. Text extraction reaches word-F1 0.98 against pdftotext. Short same-line redraws split before placement rather than interleaving. Missing: model crate, fonts, DisplayList, renderer independent of hayro. Inspector page-label traversal and output are resource-bounded, with physical-number fallback warnings. Literal page-label prefix whitespace is preserved; nine public-inspection cases cover prefix spaces, encodings and empty-prefix controls |
 | M3 | Viewer app (native + web) | 80–150 | 90% | 10–20 | Acrobat-style shell, find, select, panels, tiles, web build, UI control channel for agents (opt-in). Missing: 60 fps test on a 500-page document, snapshot tests of every panel<br>Done since: fit visible, document title in the window; Linux middle-button scrolling; shared three-state theme preferences in the toolbar, View menu and control channel; numeric Linux portal events and idle wakeups completing #881, with native appearance inheritance retained (#446); late browser startup downloads preserve the current document and Save target (#171). |
-| M4 | Engine, history, save, organize | 100–180 | 95% | 8–15 | Done:<br>- command registry (menus, shortcuts and palette all use it);<br>- undo/redo; incremental, atomic and encrypted saves;<br>- autosave and crash recovery;<br>- organize, combine, extract, split and insert-from-file, with identical fonts and images stored once;<br>- CLI `edit/combine/extract/split`.<br>Done since: Organize opens directly into the page overview, with checkbox selection, an editable page-range selection (#1092), and per-page rotate/delete controls; Combine files in its own tab (sortable, resizable columns; folders; early warnings; unlocking protected files), bookmark editing, page labels (Number pages), CLI `run`, Set Page Boxes, Crop tool, Duplicate pages, Ctrl+A / Cmd+A to select all pages in Organize, Replace pages, bookmarks from tagged headings. Extract and Split preserve shared Type 3 glyph resource graphs, retaining conservative pruning limits. Undo back to the opened or last saved file is clean; Revert opens that saved file after an undo; a later save appends to it so the saved revision stays in the file (#1310, #1311, #1312). Ctrl-drag (Option on macOS) on a grid thumbnail copies the pages into the drop gap, with a "+" badge and the copies selected (#2997). Missing: page transitions, recovery on the web |
+| M4 | Engine, history, save, organize | 100–180 | 95% | 8–15 | Done:<br>- command registry (menus, shortcuts and palette all use it);<br>- undo/redo; incremental, atomic and encrypted saves;<br>- autosave and crash recovery;<br>- organize, combine, extract, split and insert-from-file, with identical fonts and images stored once;<br>- CLI `edit/combine/extract/split`.<br>Done since: Organize opens directly into the page overview, with checkbox selection, an editable page-range selection (#1092), and per-page rotate/delete controls; Combine files in its own tab (sortable, resizable columns; folders; early warnings; unlocking protected files), bookmark editing, page labels (Number pages), CLI `run`, Set Page Boxes, Crop tool, Duplicate pages, Ctrl+A / Cmd+A to select all pages in Organize, Replace pages, bookmarks from tagged headings. Extract and Split preserve shared Type 3 glyph resource graphs, retaining conservative pruning limits. Undo back to the opened or last saved file is clean; Revert opens that saved file after an undo; a later save appends to it so the saved revision stays in the file (#1310, #1311, #1312). Ctrl-drag (Option on macOS) on a grid thumbnail copies the pages into the drop gap, with a "+" badge and the copies selected (#2997). Initial-view window and interface options resolve indirect boolean preferences. Missing: page transitions, recovery on the web |
 | M4 | Engine, history, save, organize | 100–180 | 95% | 8–15 | Done:<br>- command registry (menus, shortcuts and palette all use it);<br>- undo/redo; incremental, atomic and encrypted saves;<br>- autosave and crash recovery;<br>- organize, combine, extract, split and insert-from-file, with identical fonts and images stored once;<br>- CLI `edit/combine/extract/split`.<br>Done since: Organize opens directly into the page overview, with checkbox selection, an editable page-range selection (#1092), and per-page rotate/delete controls; Combine files in its own tab (sortable, resizable columns; folders; early warnings; unlocking protected files), bookmark editing, page labels (Number pages), CLI `run`, Set Page Boxes, Crop tool, Duplicate pages, Ctrl+A / Cmd+A to select all pages in Organize, Replace pages, bookmarks from tagged headings. Extract and Split preserve shared Type 3 glyph resource graphs, retaining conservative pruning limits. Undo back to the opened or last saved file is clean; Revert opens that saved file after an undo; a later save appends to it so the saved revision stays in the file (#1310, #1311, #1312). Rotation queries and edits resolve indirect values on pages and ancestors. Refreshed against upstream `99941daa` (2026-10-15). Repeated page indices accumulate rotations from the latest local value (#1919); saved/reopened regressions retain inherited angles and siblings. Missing: page transitions, recovery on the web |
 | M4 | Engine, history, save, organize | 100–180 | 95% | 8–15 | Done:<br>- command registry (menus, shortcuts and palette all use it);<br>- undo/redo; incremental, atomic and encrypted saves;<br>- autosave and crash recovery;<br>- organize, combine, extract, split and insert-from-file, with identical fonts and images stored once;<br>- CLI `edit/combine/extract/split`.<br>Done since: Organize opens directly into the page overview, with checkbox selection, an editable page-range selection (#1092), and per-page rotate/delete controls; Combine files in its own tab (sortable, resizable columns; folders; early warnings; unlocking protected files), bookmark editing, page labels (Number pages), CLI `run`, Set Page Boxes, Crop tool, Duplicate pages, Ctrl+A / Cmd+A to select all pages in Organize, Replace pages, bookmarks from tagged headings. Extract and Split preserve shared Type 3 glyph resource graphs, retaining conservative pruning limits. Undo back to the opened or last saved file is clean; Revert opens that saved file after an undo; a later save appends to it so the saved revision stays in the file (#1310, #1311, #1312). Rotation queries and edits resolve indirect values on pages and ancestors. Missing: page transitions, recovery on the web |
 | M4 | Engine, history, save, organize | 100–180 | 95% | 8–15 | Done:<br>- command registry (menus, shortcuts and palette all use it);<br>- undo/redo; incremental, atomic and encrypted saves;<br>- autosave and crash recovery;<br>- organize, combine, extract, split and insert-from-file, with identical fonts and images stored once;<br>- CLI `edit/combine/extract/split`.<br>Done since: Organize opens directly into the page overview, with checkbox selection, an editable page-range selection (#1092), and per-page rotate/delete controls; Combine files in its own tab (sortable, resizable columns; folders; early warnings; unlocking protected files), bookmark editing, page labels (Number pages), CLI `run`, Set Page Boxes, Crop tool, Duplicate pages, Ctrl+A / Cmd+A to select all pages in Organize, Replace pages, bookmarks from tagged headings. Extract and Split preserve shared Type 3 glyph resource graphs, retaining conservative pruning limits. Missing: page transitions, recovery on the web M4: Insert-from-file preserves source bookmarks; integration tests retained with current main. |
@@ -204,6 +205,7 @@ M2 (renderer), M7 (content editing), M10 (OCR and Office), M11 (Preflight and st
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-20 | minor | M4: initial-view window and interface options resolve indirect boolean ViewerPreferences values; synthetic true/false and save/reopen regressions retain defaults for malformed entries. Estimates unchanged. |
 | 2026-10-21 | minor | M3, #3808: the Pages inspector has an independent 50–150% thumbnail size slider and buttons; selection and current-page following are retained, with headless ui.set coverage. Estimates unchanged. |
 | 2026-10-20 | minor | M6: Prepare a form ▸ Calculation order: formulas and values, what is wrong and Fix order, Up/Down, Alt+↑/↓ and drag, links on the page. Estimates unchanged. |
 | 2026-10-20 | minor | M6: `form_calculation_order` reads, checks, fixes and sets the calculation order; an edited formula keeps its place in `/CO`. Estimates unchanged. |
diff --git a/parity/acrobat-features.toml b/parity/acrobat-features.toml
index 286710d15..a40ba8f96 100644
--- a/parity/acrobat-features.toml
+++ b/parity/acrobat-features.toml
@@ -3472,8 +3472,8 @@ milestone = "M4"
 status = "shipped"
 commands = ["file.properties"]
 tools = ["doc_initial_view"]
-evidence = ["crates/ui-egui/tests/ui.rs::a_document_asking_for_full_screen_is_asked_about_first", "crates/organize/src/tests.rs::initial_view_round_trips_and_keeps_scripts", "crates/ui-egui/tests/viewer.rs::initial_view_is_edited_and_honoured_on_open", "crates/automation/tests/automation.rs::initial_view_through_tools"]
-notes = "navigation panel, layout, magnification, page, window and interface options; honoured on open; script open actions kept. Open in Full Screen mode (/PageMode /FullScreen) asks first (Full Screen / Not now), as Acrobat does, instead of taking the screen. Missing: Acrobat's Full Screen preference to turn that alert off and its \"remember my choice for this document\" (misc.prefs-full-screen)"
+evidence = ["crates/organize/src/view.rs::initial_view_resolves_indirect_boolean_preferences", "crates/ui-egui/tests/ui.rs::a_document_asking_for_full_screen_is_asked_about_first", "crates/organize/src/tests.rs::initial_view_round_trips_and_keeps_scripts", "crates/ui-egui/tests/viewer.rs::initial_view_is_edited_and_honoured_on_open", "crates/automation/tests/automation.rs::initial_view_through_tools"]
+notes = "navigation panel, layout, magnification, page, window and interface options; honoured on open; script open actions kept. Open in Full Screen mode (/PageMode /FullScreen) asks first (Full Screen / Not now), as Acrobat does, instead of taking the screen. Window and interface options also read indirect boolean ViewerPreferences values. Missing: Acrobat's Full Screen preference to turn that alert off and its \"remember my choice for this document\" (misc.prefs-full-screen)"
 
 [[feature]]
 id = "organize.custom-properties"