QuillLite — Product Requirements

Version 1.0.0 · Windows · MIT · part of the QuillVille family

1. Statement

QuillLite is QUILL with everything removed except the editor. One document per window, plain text or rich text, and nothing else.

It exists for one person: someone who wants Notepad or WordPad with QUILL’s accessibility, and who finds the full writing environment more than they need. That is not a small group. QUILL for All is a writing environment — AI, dictation, conversion, comparison, publishing, braille tooling, extensions — and for a great deal of what people actually do with a text editor, all of that is in the way. Opening a .txt file to change one line should not start a product with a setup wizard.

QuillLite is not a replacement for QUILL and not a place new features go. Anyone who wants any of the list above wants QUILL. This is stated here, in the requirements, because the pressure will be to add things: it is built so that it cannot grow into QUILL without somebody deliberately deciding to abandon the product it is.

Provenance

QuillLite began as PR #1490 by Steven Scott (doubletaponair), offered under this repository’s MIT licence. That PR also isolated a real bug in QUILL’s own Rich Edit surface — see §7 — and deliberately did not fix it, so that adding an app and changing the editor stayed separate decisions. Both decisions were taken; the fix ships with this release and reaches every QUILL user, not only QuillLite’s.

2. Architecture

QuillLite is not a fork. That is the single most important architectural statement in this document, and it is the difference between a sibling and a copy that rots.

Layer Where What
The app quill/apps/lite*.py The shell, the windows, their menus, commands, status bar and dialogs
Its own domain logic quill/core/lite/ Settings, paths, recovery, the command table, file encoding, backups, the inbox, the feature areas
Logic QUILL should also have quill/core/numbered_bookmarks.py Nine slots that move with the text – shared, not QuillLite’s; see 2.2
Its F1 catalogue quill/core/lite_surface_help.py What every window is for
The editor surface quill/ui/richedit_editing.py over quill/ui/richedit_rtf_surface.py QUILL’s own control, extended — not copied
The product shell standalone/quilllite/ Entry point, icon, installers, docs

Everything under quill/ is therefore covered by the repository’s existing gates — module-size budget, access-key uniqueness, the over-announce gate, the dialog registry, the F1 audit — which is the reason the app code lives there rather than in the product folder. A surface that no gate can see is a surface that silently rots; QUILL Cast shipped an unreachable first-run dialog for two releases exactly that way.

2.1 What QuillLite reuses rather than reimplements

Each of these is a QUILL finding that cost real on-device testing to establish. QuillLite gets them by using QUILL’s code, not by copying its conclusions:

2.2 QuillLite is never allowed to be ahead of QUILL

This is a rule, not an aspiration, and it has already cost work twice.

If QuillLite needs something the editor cannot do, the capability goes into the shared package and the editor gets a way to reach it in the same release. A feature the small product has and the big one does not is exactly backwards – and worse, it is invisible: nobody opens QUILL and notices the absence of a thing they have only ever seen elsewhere.

In this release that meant:

Where the two must differ, they differ on purpose and in writing. QUILL takes Ctrl+Alt+J and Ctrl+Alt+V where QuillLite uses WordPad’s Ctrl+J and Ctrl+Shift+V, because Ctrl+J has been Set Temporary Bookmark and Ctrl+Shift+V has been Preview in QUILL for far longer. An existing binding somebody’s hands already know outranks a new command’s convention, and the reason is a comment in keymap.py rather than folklore.

2.3 What QuillLite adds to the shared package

quill/ui/richedit_editing.py is a subclass of QUILL’s surface, not a copy of it. A document window — one file, one window, switchable between plain and rich, themed by itself — needs five things a notebook tab does not, and every one is a Rich Edit message or a TOM call that wx has no spelling for: text-mode switching (EM_SETTEXTMODE), word wrap (EM_SETTARGETDEVICE), view background and zoom (EM_SETBKGNDCOLOR, EM_SETZOOM), whole-document recolour for the theme, and heading enumeration.

The zoom detail is load-bearing: in rich text the text-size control is a view zoom rather than a font change, because run point sizes are the heading ladder and rewriting them would silently re-level every heading in the document.

3. Scope

3.1 What it keeps, and why

Kept Why
Plain text and rich text, one document each The two things Notepad and WordPad are
Headings 1–4, bold/italic/underline, alignment, fonts The formatting a WordPad user expects, on QUILL’s ladder
Heading navigation and a headings list, in both modes The reason a screen-reader user prefers a structured document at all; plain text has Markdown headings and they are real
A spoken “Heading 2” on arrival Nothing else in the stack can say it — see the heading ladder above
Describe Formatting at the cursor QUILL’s own answer to “what am I standing in?”
Find, Replace, Go to Line Non-negotiable in any editor
A focusable status bar (F6) See §4.2
Unsaved-work recovery, and session restore See §5.2
Byte-honest encoding and line endings, and a way to change them See §5.1
Dark mode, on by default See §4.4
Nine numbered bookmarks that move with the text No scrollbar to remember the position of
Structural selection (word, line, paragraph, expand) Shift+arrow is the wrong tool for a paragraph
Describe Character A reader says “space” for four different characters
A twelve-slot copy tray, a collector and a clip library The system clipboard holds one thing
Abbreviations, over QuillLite’s own library Expansion is an accessibility feature, not a typing one
Sort, de-duplicate, trim, and three case conversions Work, not writing — and expensive by keyboard
Printing and Page Setup Every text editor Windows has ever shipped has Ctrl+P
The Command Palette Answers “how do I sort lines?”, which is the real question
Switchable feature areas See §3.3

3.2 What it drops, and why

Tabs, AI, dictation, self-voicing, preview, Quillins, remote files, GitHub, braille tooling, the setup wizard, the command palette, comparison, publishing, and every companion app.

Two of those deserve their reasoning stated rather than assumed:

3.3 Two decisions that shape everything else

Numbered documents in one window. Documents are MDI children of a single QuillLiteShell, numbered from 1, and a number is never reused while its document is open. “Document 3” is a name a person can hold and say out loud; “the other Untitled” is not.

The cost is real and is written into the module that causes it: MDI children do not appear in Alt+Tab. The whole burden of moving between documents falls on the app, so it carries it four ways – Ctrl+F6 (the Windows convention), Ctrl+Tab (what people actually press), Alt+1 to Alt+9, and the Window menu – and every document’s title leads with its number, because the title is the one string a screen reader announces on arrival.

Switchable feature areas. QuillLite stays small by being switchable, not by being poor. Tools > Customize Features turns whole areas off, and switching one off removes its menu and its keys – a key that still fires for a feature somebody turned off is the feature not being off. Somebody who wants Notepad unchecks rich text, and the Format menu is gone entirely.

Three areas ship switched off and are found in that same checklist rather than hidden, because a feature nobody can find is a feature that does not exist: autocorrect (welcome in prose, actively wrong in a config file), timestamped backups (reassuring, and they fill a folder), and Go To Anything (the palette, the headings list and the bookmark list each already answer their own part).

Seventeen areas, not twelve (2026-09-10). Five features belonged to no area at all, which meant no switch in the dialog could reach them: the Matches submenu, Go Back and Go Forward, the Command Palette, Describe Character, and text size. That is a different failure from a feature being un-switchable on purpose – there was nothing to find and nothing to complain about. Going the other way, File Encoding and Line Endings stopped being switchable: it belonged to the line-tools area, so turning off Sort Lines also took away the dialog that decides whether a file round-trips byte-for-byte, which for a Notepad replacement is most of the job.

3.3a Profiles: a name is a promise, not a preset

Seventeen checkboxes is the right way to change one thing and the wrong way to say “give me the small one”. :data:quill.core.lite.features.PROFILES is four named starting points – Recommended, Everything, WordPad, Notepad – and the design rules behind them are worth stating, because each one has a cheaper wrong version.

A profile is a baseline, not a mode. Applying one ticks and unticks every box, and then the boxes are the truth again. There is nothing to escape from: the very next change is an ordinary per-area override, and the Choice reads back Custom the moment the boxes stop matching. The alternative – a mode that owns the dialog and reverts what you do – makes the checklist a lie.

A profile is written as what it takes away. AppProfile.disabled lists the areas switched off, never the ones kept, so an area added in a later version is on in all four profiles until somebody decides otherwise. A profile written before a feature existed must not silently remove it.

Two of them carry a setting, and only those two. “Notepad” does not mean these menus; it means the thing you type in is plain text. A Notepad profile that removed the Format menu and went on creating rich text documents on Ctrl+N would keep the letter of its name and break its promise – and the user would find out one document later, at a Save As dialog offering a format they thought they had turned off. So Notepad claims default_mode = "plain" and WordPad claims "rich". Recommended and Everything claim nothing: they are statements about which areas exist and have no opinion about the rest, and a profile that quietly rewrote a setting the user chose would be the mode this design refuses to be.

A description you cannot read is not documentation. Every profile has carried a paragraph since profiles existed and nothing displayed it – the Choice listed four bare names. Every other profile system in the codebase shows its description; this was the one that did not. It is now under the Choice, it is the Choice’s F1 answer, and it is spoken once when Use Profile is pressed. Not on every arrow of the Choice: the reader is already saying the name, and a paragraph over the top of that is what GATE-13 exists to stop.

Profile Areas on Ctrl+N For
Recommended 14 of 17 unchanged the shipped answer, and the way back from experimenting
Everything 17 of 17 unchanged turning things off as they annoy you rather than finding them one at a time
WordPad 5 of 17 rich letters and notes that should look like something
Notepad 2 of 17 plain config files, logs, and anything where hidden formatting would be a problem

Notepad keeps two areas and still has Find, Replace, Go To Line, Select All, Insert Date and Time, Word Wrap, the font picker, the status bar, Undo, printing and text size – everything Notepad has had since 1985 – because those live outside the switchable areas by design. It also keeps File Encoding and Line Endings, per the paragraph above.

3.4 Non-goals

4. Accessibility

The four family rules, applied here.

4.1 Every menu item shows its key, and no key is claimed twice

The menu bar is generated from one table, so the keys the menus advertise, the keys that are bound and the keys the Keyboard Shortcuts window lists are one list read three times. tests/unit/core/lite/test_lite_commands.py asserts, of that table: every item carries a key; no key is claimed twice; no & mnemonic is claimed twice inside one menu (Windows cycles focus between duplicates instead of pressing, so one of a pair silently cannot be reached); and every key string is one wx.AcceleratorEntry can actually parse — wx silently drops what it cannot, leaving a menu advertising a dead key.

4.2 Every window answers F1, and so does every control

F1 answers with what this window is for, then what the focused control does, through the family’s shared engine. GATE-LITE-HELP (quill/tools/lite_help_audit.py) refuses to let a new window ship without a purpose or a new control ship without help.

QuillLite adds a stricter check of its own (tests/unit/tools/test_lite_control_help.py), because the shared scanner has two blind spots that matter here: it does not treat wx.CheckBox as helpable (and the Find and Replace windows are half checkboxes), and it cannot see a control built by a factory in another module — which is the document itself, the control a listener is in for all but a few seconds of a session.

4.3 The status bar is navigable, not decorative

QUILL’s status bar is a row of focusable cells rather than painted text, and QuillLite’s is the same: F6 lands in it, arrows and Home/End move between cells, each cell announces its value, Enter acts on it, and Escape returns to the document. Ten cells: the last announcement, position, words, characters, selection, format, heading, encoding, line endings, and saved state.

Two of those exist nowhere else in the app. Encoding and line endings are what decide whether a file round-trips byte-for-byte, which for a Notepad replacement is most of the job — and in every other editor they are invisible.

Refreshes are coalesced through a restarting 90 ms timer (QUILL’s own window): counting words is O(document), and a refresh per keystroke is several full scans per keypress.

4.4 Say only what the screen reader does not already say (GATE-13)

The reader announces window titles, focus moves, control names, roles, states and selection changes. QuillLite announces only outcomes it alone knows: “Bold on”, “Saved notes.txt”, “Replaced 4 occurrences”, “Wrapped to the start”, “Heading 2: Installing”. Nothing is announced from a focus handler; the one exception is the F6 landing in the status bar, which names the region once, because moving from a text control to a strip of buttons is described by the reader as “button” and nothing more.

Announcements also land in the status bar’s message cell, so speech that was missed can be read again.

Two smaller decisions in the same spirit: OK, Cancel and Close carry no & mnemonic at all — Enter and Escape already serve them, and every letter they give up resolves a collision elsewhere (GATE-14) — and dark mode is the default, because the users this editor is for are disproportionately light-sensitive and a first launch that is bright white is a first launch some of them cannot read.

5. Safety and data

5.1 Byte honesty

Open a file, change nothing, save it, and the bytes must be the bytes you started with. quill/core/lite/textfile.py owns this: a UTF-8 BOM is kept, a UTF-16 file stays UTF-16, and the enormous installed base of Windows text files that are neither is cp1252 — tried last, because it can never fail to decode. Line endings are remembered and re-applied, so a file that arrived from a shell script does not silently gain carriage returns because it was opened once.

Every write is atomic (temp file in the same directory, then os.replace), so a power cut during a save leaves either the old file or the new one, never a truncated one. In rich mode the theme colour is reset to automatic before the save and restored afterwards, so dark mode never leaks light grey text into somebody’s document.

5.2 Recovery

Every modified window owns one recovery slot: a copy of the content beside the original, written on a timer and removed the moment the document is saved or closed cleanly. A clean shutdown leaves the folder empty; anything still there on the next start is work the last session did not keep, and is reopened in its own window, unsaved. The original file is never touched, so a crash mid-save cannot leave somebody with a truncated original and no recovery.

The interval is a setting (15–600 seconds, default 60) and is one of the two settings that exist only in Preferences.

5.3 Its own data folder

Settings, recent files and recovered work live in %LOCALAPPDATA%\QuillLite, deliberately not in %APPDATA%\Quill. QuillLite is offered as an alternative to QUILL rather than as a client of it: a Notepad-scale editor that silently adopted a writing environment’s settings would be making a decision nobody asked it to make, and uninstalling it could then cost somebody something QUILL owns. A machine that has never had QUILL installed must not grow a Quill folder because somebody opened a text file.

This is why QuillLite does not use quill.core.ipc for its single-instance guard — that lock lives in QUILL’s data directory. It uses wx.SingleInstanceChecker (a kernel object, with no file to go stale) plus its own inbox directory. Uninstalling never removes the data folder either: recovery slots are the one thing somebody may not have finished with, and an uninstaller is the worst possible moment to discover that.

5.4 File associations

The full installer offers “Open .txt and .rtf files with QuillLite” as an optional component that registers an Open With verb, never a default handler. A text editor that quietly takes over every .txt on the machine is a text editor people uninstall, and Notepad, WordPad and QUILL stay exactly where they were.

5.5 Getting help, without an account and without an audience

Help > Get Help from Support… (Ctrl+Alt+F2) writes an email to support@community-access.org, where a person reads it and the reply comes back to the person who wrote it.

That is a correction, not a feature. The family’s reporting item used to file a GitHub issue in a public repository, through a token baked into every installer, and it left the reporter with no way to be answered: a GitHub issue is not a conversation you can join without an account, which is precisely the account a screen-reader user reporting that an editor went silent is least likely to have. Worse, somebody describing a failure names their configuration, their employer, or the document they were working on — and every word of it was published, permanently and searchably, the moment they pressed Submit.

QuillLite had neither half of that. It shipped with no reporting item at all, only an address printed in the About box to copy out by hand.

The form is the same one every app in the family opens (quill/ui/support_dialog.py over quill/core/support_message.py): what kind of message this is, a subject, and what happened. What you expected and how to reproduce it are optional. Your email address is optional too — a problem can be reported without giving one; you simply cannot be replied to. Send opens your own mail program with the message already written, with QuillLite’s name and version, your Windows version and your screen reader appended. Nothing leaves the machine until you send it there, and the app says so out loud rather than claiming to have sent something it has not. A machine with no mail program set up — webmail only — gets the whole message and the address on the clipboard, so nothing typed is ever lost.

Writing to support@community-access.org directly works exactly as well. There is no form anybody is required to use.

6. Release packaging

Four artifacts, the family contract:

Artifact Built from Output Measured
Installer installer/quilllite.iss QuillLite-Setup-Shared-1.0.0.exe 113 MB
Full portable build_portable.py --product quilllite QuillLite-Portable-1.0.0.zip 91 MB

Two artifacts, where the other apps publish four (2026-09-15). QuillLite used to ship the thin QuillLite-Lite-Setup and the launcher-only QuillLite-Companion zip as well, and both were wrong for this product. The Companion zip installs nothing, so it binds to whatever shared runtime is already on the machine – including one frozen before QuillLite existed, which fails at launch with No module named quill.apps.lite and cannot repair itself, because the launcher’s runtime bootstrap only fires when no runtime resolves and a stale one resolves perfectly well. The thin installer traded a 113 MB download for a 110 MB first-launch download plus a network dependency, on the one app somebody installs because they have nothing else – so the runtime is usually absent and the saving is notional. Retiring both is safe for anyone already on one: the two installers share an AppId, so this one upgrades a thin install in place, and core/updates.py falls through to an installable asset when a release publishes none for the running edition. The other eight apps are unchanged.

The download names spell the product as one mixed-case word, QuillLite-*, never Quill-Lite-*: a screen reader speaks QuillLite as the product’s name, where a hyphenated form is read out punctuation and all.

The installer script is named quilllite.iss, not quill-lite.iss: the family reserves the *-lite.iss suffix for the thin installer flavour, and quill-lite.iss ends in it – so the installer was being audited as a thin one. Every other identifier for this product is already quilllite (the folder, the AppRefId, the launcher product key), so the installer matches it.

portable-inventory.json is committed and enforced: the portable build fails on any drift from it, which is the class of defect that once put 82 MB of undeclared payload into a runtime installer.

Both come from scripts/build_release.ps1. The shared QuillVille Runtime at %LOCALAPPDATA%\QuillVille\Runtime\3.13\ is reused: the installer ships it and lays it down only when what is already there is older, and the portable bundle carries its own interpreter and never touches it at all. Neither ffmpeg nor libmpv is staged — QuillLite declares no media components, and the build strips any a sibling app left in the shared work area, so build order cannot change what ships.

Code signing is opt-in (-Sign / QUILL_SIGN=1), the same convention as every sibling; see docs/code-signing.md.

Releases publish to Community-Access/quill rather than to a repo of their own, and are told apart by the QuillLite-* asset prefix. Deviation from the siblings, noted deliberately: Radio, Cast, Weather and Studio each have their own release repo. Revisit if it bites.

6.1 Updating in place

Help > Check for Updates… on Ctrl+Alt+U, the key eight sibling apps already answer, plus a silent once-a-day check at launch (check_updates_on_launch, on by default, one checkbox in Settings). Page Setup gave up Ctrl+Alt+U for it and took Ctrl+Alt+P, which is free in both editors and a better letter besides: a chord that means one thing in eight apps and something else in the ninth is the kind of difference nobody finds until it does the wrong thing.

Before this, QuillLite could not tell its user that a newer version existed. It is the app most likely to be somebody’s only Quill product — installed by a person who wanted Notepad — and therefore the app whose users are least likely to go looking on GitHub. They would have stayed on 1.0.0 forever with no way to know that was happening.

The dialog is shared, and it always shows what changed. quill/ui/ update_notice.py is the one “an update is available” surface for QUILL, the eight companion apps and QuillLite: the release notes flattened out of Markdown, capped and never empty, with Update as the affirmative and default and Close as the escape. Focus lands on the notes rather than on a button, so the first thing read is the release notes and not the word “Update”. QUILL alone adds Skip this version, because QUILL alone has a settings field to remember the answer in. The download, its spoken 25/50/75 milestones, and the Install-and-restart dialog are quill/ui/update_download.py, shared the same way — QuillLite has no TaskManager, so it supplies a one-shot thread instead and gets the identical experience.

Releases resolve from RELEASE_REPO and RELEASE_ASSET_PREFIX in quill/core/lite/__init__.py, deliberately not from companion_install.ASSET_PREFIX: that table is the set of QuillVille apps QUILL can offer to install for you, and QuillLite is a separate product rather than a sibling QUILL launches.

The silent launch check says nothing in every direction but one: nothing while it runs, nothing when there is nothing, and nothing when the network is down. Only a genuine newer version speaks, and even then it only offers — nothing is downloaded until the user presses Update.

Two family-wide defects were fixed to make this honest (2026-09-12), both older than QuillLite and both live in every companion app:

7. The QUILL-side fixes this work produced

Both were isolated by PR #1490 and both ship in quill/ui/richedit_rtf_surface.py, where every QUILL user gets them.

_TOM_TRUE was tomUndefined. tom.h defines tomTrue as -1; -9999999 is tomUndefined, which means “leave this property alone”. Assigning it to ITextFont.Bold therefore asked the control to change nothing — and succeeded. set_heading applied the point size, silently never applied the bold, and raised nothing. Because heading_level_for_font requires bold before it will call a paragraph a heading, QUILL could not then find the headings QUILL had just made: heading navigation and Describe Formatting both went blind in rich mode. Measured on RICHEDIT50W / Riched20 10.0.26100:

Bold = -9999999 (tomUndefined)  ->  Bold=0   Weight=400
Bold = -1       (tomTrue)       ->  Bold=-1  Weight=700

standalone/quilllite/tests/repro_tom_true.py reproduces it in isolation and imports neither QUILL nor QuillLite, so it can be run against a clean checkout.

A collapsed caret described the wrong paragraph. A collapsed TOM range reports the formatting of the character before it, so standing at the start of a heading described the paragraph above it. caret_format_description now probes the character after the caret, which is what a screen reader describes.

7.1 The spell checker, and the exception that makes it usable

QuillLite ships a spell checker because the products it is measured against have moved: WordPad never had one and never will, but the Notepad on a Windows 11 machine today has had spell check and autocorrect since 2024. An editor claiming Notepad parity without one is behind the thing it is copying.

None of the checking is new. The wordlist, the suggestion ranking and the guided F7 review are QUILL’s, reached through the same helper the Mastodon compose box uses. What QuillLite added – and what QUILL now shares – is the rule about when not to speak.

A live spell checker in settings.json flags every key; in main.py it flags every identifier. Those alerts are not merely useless, they are asymmetrically expensive: a sighted user’s eye skates over a red underline it has learned to distrust, while for this product’s actual users each one is a status line to read past. A feature that interrupts fifty times a minute is one people switch off permanently, and a feature switched off permanently is a feature that was never shipped.

So the default follows the file’s extension, decided once per document, and three things follow from it:

QUILL already suppressed live alerts inside URLs, code spans and fenced blocks (spellcheck_live), which is the right granularity in prose and no help at all in a source file, where the whole document is the exception. It now consults the same file-type rule QuillLite does, behind spellcheck_skip_code_files.

Markdown is deliberately not on the code list. It is where people write, and suppressing the whole file would silence the prose along with the code; its code regions are handled by spellcheck_live, at the granularity that fits.

7.2 Selection is three features, not one

Edit > Selection is the largest single surface QuillLite adds, and it is worth saying why an editor this small carries one at all. It is a submenu: nineteen items poured into Edit would swamp it, and another top-level menu on a small editor’s bar is a cost paid on every visit by everyone. A submenu is one Alt+E, N away, and gives the group its own mnemonic namespace.

Selecting text without sight is a different job from selecting it with a mouse, and the difference is not one of degree. There is no drag. There is no glance afterwards that confirms you took what you meant to. Shift and an arrow key – the answer every editor offers – is fine for two letters and useless for four paragraphs, because it gives no feedback and no sense of position.

So the menu offers three genuinely different mechanisms rather than one with variations:

Mark and extend (F8). Anchor, move by any means, complete. The only way to take an arbitrary run of text without holding a modifier down throughout, and the only one that composes with every navigation key the editor has rather than with a fixed set of chords. Ported key for key from QUILL, because a user of both should not have to hold two versions of it.

Structure. Word, line, sentence, paragraph, block – taken whole, without needing to know where they start, then grown or shrunk a rung at a time. This is the one that removes counting.

Marks. Throwaway positions, deliberately distinct from the nine bookmarks: a bookmark is a place you decided to keep, a mark is where you were standing before you went to look something up, and conflating them makes both worse.

One rule runs through all of it: every command says how much it took. “Selected paragraph, 412 characters” is a fact somebody can act on. A selection that announces nothing has to be verified by pressing something destructive and seeing what disappears, which is not a test anybody should have to run.

Select All stays in Edit itself on Ctrl+A, outside this switchable area, so turning the submenu off can never remove the one selection command that predates all of it.

8. Future directions

8.1 Accepted for a later release (decided 2026-09-08)

QUILL’s editor surface was diffed against QuillLite’s, command table against command table and user guide against user guide, and the result reviewed against one test: does the absence read as a defect against a promise this product already makes – “Notepad and WordPad’s keys, unchanged”, and “QUILL’s accessibility” – or as the restraint §1 asks for? Thirteen were accepted on that basis. Every one of them already exists in QUILL, so §3.4’s “not a feature destination” is not in play: none is a new invention, each is shared code given a door here, behind its own switchable area in the §3.3 sense.

The Notepad baseline. Insert/Overwrite mode – Notepad has had it since 1985, and it becomes one more readable cell in the status bar §4.2 already argues for. Tab as indent versus a literal tab, with Indent and Outdent on a selection. Line operations: Move Line Up/Down, Delete Line, Join Lines – today reordering two lines costs a select, cut, move and paste, which is four keystrokes and a lost cursor for the reader this editor is for. Structured deletion (to line start/end, delete paragraph) with QUILL’s deletion ring, which re-inserts recently deleted text at the cursor and so turns a delete into a move – something undo cannot do.

The first two settle an argument this document currently leaves half-made: §5.4 already accepts that people edit .json and .py here, which is why spell check goes quiet in them. Shipping that concession without Tab control and block indent is one half of a position.

Find and Replace, which has Match case and nothing else. Whole word and regular expressions; extended escapes (\n, \t, \uNNNN) so the invisible characters Describe Character already names can also be searched for – the two are halves of one workflow; Count Occurrences and a match list to arrow through; and peek navigation with a spoken match count, so a search’s shape is known before it is committed rather than discovered one F3 at a time.

Navigation. Bookmarks that persist between sessions, and the last cursor position restored – §3.1 justifies bookmarks with “no scrollbar to remember the position of”, and that argument does not stop when the document closes. Back and Forward location (Alt+Left/Right), the undo for navigation.

Parity and the safety net. A way to browse and restore the timestamped backups QuillLite already writes – a safety net nobody can reach is not one, and this is the missing half of a feature that ships today. Heading promote and demote, and moving a section with its body, so a document can be restructured without the cut-and-paste most likely to lose a reader’s place. Sentence Case and Toggle Case, and the line transforms people actually reach for (numeric sort, sort by length, reverse, number lines, hard wrap).

Considered in the same pass and declined, so the reasoning is not lost: browse mode / Quick Nav single-key jumping – the strongest accessibility case of anything reviewed, and a modal layer over every keystroke, so it is its own project rather than an item on a list; match bracket and first-non-blank, too narrow for prose; strikethrough, superscript, subscript and numbered lists – revisit numbered lists first if this is reopened, since an ordered list is structure a reader announces rather than decoration.

8.2 Out of scope

Out of scope for 1.0, and each stated so it is a decision rather than an oversight:

9. Validation