Sources

What every rule and fact here rests on, and when it was last checked.

Here is every source we rely on, 45 in all, with the date each was last checked and the pages that cite it.

Other pages keep citations short. A rule names its section of the ICEB Rules of Unified English Braille, such as “ICEB 6.1”, and a statement about the engine names the liblouis release it runs. We put ICEB's text in our own words and never copy it.

Braille rules 2 sources

Rules of Unified English Braille, Third Edition 2024

International Council on English Braille (ICEB). Checked September 26, 2026.

What we take from it (45 statements)
Where in it
Foreword to the Third Edition, p. xv; section numbers cited per claim
Recorded
By 2016, all member countries had adopted and implemented UEB as the code of their land.
Used for
Every rule claim on this site cites a section of this book. Its text is paraphrased, never reproduced.
  • By 2016 every member country of the International Council on English Braille, the United States among them, had adopted and implemented Unified English Braille. ICEB Foreword to the Third Edition
  • Older forms of English braille, including English Braille American Edition (EBAE), write the words a, and, for, of, the and with joined together, use contractions UEB dropped (such as to, into, by, ble, com and ation), and write brackets, dashes and some quotation marks differently. ICEB 1.3.1–1.3.3
  • Uncontracted (grade 1) braille spells every word letter by letter; contracted (grade 2) braille also uses contractions, signs that stand for whole words or groups of letters. ICEB 2.5
  • Use uncontracted braille for readers who have not learned contractions, for words whose spelling matters, and for foreign words. ICEB 2.5.4
  • Uncontracted braille is not the same as grade 1 mode: grade 1 mode exists only after a grade 1 indicator or a numeric indicator. ICEB 2.5.2–2.5.3
  • In Grade 2, a letter standing alone, with a space, hyphen or dash on each side, would be read as a whole word, so it takes the grade 1 indicator ⠰ in front. The letters a, i and o need no indicator, because on their own they are not contractions. ICEB 2.6.1, 5.2.1, 5.7.1
  • The numeric indicator ⠼ (dots 3-4-5-6) turns the letters a to j after it into the digits 1 to 9 and 0. ICEB 6.1
  • One numeric indicator covers the digits, full stops and commas after it. A space and most other signs end the number, so after the colon in a time or the slash in a date the digits take a new numeric indicator. ICEB 6.2.1, 6.3.1
  • The numeric indicator also sets grade 1 mode. Straight after a digit, a full stop or a comma, only a lowercase letter a to j needs the grade 1 indicator ⠰, because it would otherwise read as a digit. ICEB 6.5
  • A capital letter is two cells: dot 6 (⠠) followed by the lowercase letter. ICEB 8.3.1
  • Two capital signs ⠠⠠ put the rest of a word in capitals, three ⠠⠠⠠ start a passage of three or more capitalised words, and ⠠⠄ ends capitals. ICEB 8.4–8.6
  • The forward slash is two cells, ⠸⠌. The single cell ⠌ is the contraction for st. ICEB 7.4
  • The percent sign is ⠨⠴. ICEB 3.21
  • The number sign (hash) is ⠸⠹, not the numeric indicator ⠼. ICEB 3.19
  • UEB sorts its contractions into nine types, and each type has its own rules about where its signs may be used. ICEB 2.2, 10.1–10.9
  • Shortforms are abbreviated spellings of particular words, such as ⠁⠃ for about. They are used only for the words in the shortforms list in the Rules and the longer words listed with them. ICEB 10.9, Appendix 1
  • A letters-sequence at the start of a word takes the grade 1 indicator ⠰ in front when it would otherwise be read as a longer word built from a shortform. Without it, blvd (⠃⠇⠧⠙) would read as a word built from ⠃⠇, the shortform for blind, and LLC as one built from ⠇⠇, the shortform for little. Words such as blue, black and llama cannot be read that way, so they need no indicator. ICEB 10.9.8
  • A braille cell has six dot positions in two columns of three: dots 1, 2 and 3 run down the left column and dots 4, 5 and 6 down the right. ICEB 1.1.1
  • Braille order sets the 63 cells out in seven lines. Line 1 (a to j) uses only dots 1, 2, 4 and 5. Line 2 (k to t) adds dot 3 to each of them. Line 3 adds dots 3 and 6, and its first five cells are u, v, x, y and z. Line 4 adds dot 6, and its last cell is w. ICEB 1.1.2
  • The six dot positions make 64 patterns. One of them, with no dots raised, is the space, so 63 cells have at least one dot. ICEB 1.1.2
  • Braille was first made for French and later adapted for English and many other languages. ICEB 1.1.5
  • In UEB each print symbol has one braille sign, whatever the subject. ICEB 1.2.4
  • A fraction printed as one character, such as ½, uses the simple fraction line ⠌ (dots 3-4), which keeps numeric mode going. A fraction printed with a slash, such as 1/2, keeps the slash ⠸⠌, so the number after it takes a new numeric indicator. ICEB 6.2.1, 6.3.1, 11.3.1
  • While the grade 1 mode set by a number lasts, the letters after it are not contracted, so 1st is written with s and t rather than the st sign. ICEB 6.5.3
  • A space, hyphen or dash ends the grade 1 mode a number sets. After a hyphen, a letter that could be read as a contraction takes the grade 1 indicator. ICEB 6.5.1, 6.5.4
  • When print groups the digits of one number with spaces, UEB writes each of those spaces as dot 5, so the whole number needs only one numeric indicator. ICEB 6.6.1
  • UEB writes a dash as ⠠⠤ (dots 6, 3-6) whatever its length in print. The long dash ⠐⠠⠤ is used only when print has both a short and a long dash. ICEB 7.2, 7.2.4
  • Double quotation marks are one cell each, ⠦ to open and ⠴ to close. Single quotation marks put dot 6 in front: ⠠⠦ and ⠠⠴. ICEB 7.6.1, 7.6.2
  • The question mark and the opening double quotation mark share the cell ⠦. At the start of a word it opens a quotation; anywhere else it is a question mark. ICEB 7.5, 7.6.7
  • The apostrophe is ⠄ (dot 3). Print often uses one character for both the apostrophe and the closing single quotation mark, so software has to decide from position and cannot always get it right. ICEB 7.6.6, 7.6.13
  • A punctuation mark in a position where it would be read as a contraction takes the grade 1 indicator, such as a question mark standing alone. ICEB 7.1.3, 7.5.3
  • UEB’s currency signs are two cells, dot 4 and then a letter, such as ⠈⠎ for $ and ⠈⠇ for £, and they go where print puts them. ICEB 3.10
  • The full stop is ⠲ (dots 2-5-6), the comma ⠂ (dot 2) and the question mark ⠦ (dots 2-3-6). ICEB 7.1, 7.5
  • An indicator is a braille sign with no print symbol of its own; it tells the reader how to read the signs after it. ICEB 2.1
  • Apart from a few indicators, a UEB sign of two or more cells is one or more prefixes followed by a root. The prefixes are the numeric indicator and the seven cells made only from dots 4, 5 and 6; every other cell is a root. ICEB 1.2.5–1.2.7
  • Punctuation follows print, apart from a few rules for particular marks. ICEB 7.1.1
  • A letter with an accent or other modifier is written with the modifier sign before the letter, wherever the mark sits in print. ICEB 4.2.1
  • UEB writes the apostrophe as ⠄ (dot 3), a different sign from the single quotation marks ⠠⠦ and ⠠⠴. ICEB 7.6.2, 7.6.6
  • Print often uses the same mark for an apostrophe and a single quotation mark, so ICEB accepts that software cannot always choose between them correctly without a transcriber. Where nothing better is available, it may decide by whether there are letters on each side of the mark. ICEB 7.6.13–7.6.15
  • ICEB's examples of the apostrophe ⠄ include “rock ’n’ roll”, where both marks are apostrophes, and “the '90s”. ICEB 7.6.6
  • A quotation mark standing alone reads as a wordsign: ⠦ as his, ⠴ as was, ⠠⠦ as His and ⠠⠴ as Was. ICEB 7.6.8, 7.6.10
  • UEB writes a print dash as ⠠⠤. The long dash ⠐⠠⠤ is used only when the print uses both a short and a long dash. ICEB 7.2, 7.2.4
  • An alphabetic or strong wordsign stands for its word only when the word stands alone: a space, hyphen or dash on each side, with nothing between but punctuation such as quotation marks, brackets or a full stop. It is also used before an apostrophe and d, ll, re, s, t or ve, as in it’s ⠭⠄⠎ and you’ll ⠽⠄⠇⠇. ICEB 2.6, 10.1.1–10.1.2, 10.2.1–10.2.2
  • The strong contractions for and, for, of, the and with, the strong groupsigns such as th and ing, and the initial-letter contractions such as one are used wherever their letters occur, inside longer words too, unless another rule limits them. ICEB 10.3.1, 10.4.1, 10.7.1
  • The lower groupsign for be is used when be forms the first syllable of a word, as in become. In been, best and better it does not, so the b and the e are written out. ICEB 10.6.1

Unified English Braille (UEB) publications

ICEB. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
Rules of Unified English Braille (Third Edition, 2024)
Recorded
The electronic files are available below for free download and can be printed or embossed for personal use.
Used for
Where to get the rules for yourself, in print or braille.
  • ICEB offers the Rules of Unified English Braille as free electronic files that may be printed or embossed for personal use.

The engine and its licences 11 sources

COPYING.LESSER (GNU Lesser General Public License, version 2.1)

liblouis project. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
Shipped unmodified as /engine/…/LICENSE and, for browsers, LICENSE.txt
Recorded
GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999
Used for
The licence of the engine and tables.
  • liblouis is free software licensed under the GNU Lesser General Public License, version 2.1 or later. Its command-line tools, which we do not use, are under the GNU GPL, version 3 or later.

Emscripten LICENSE

Emscripten authors. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
Emscripten 6.0.10
Recorded
Emscripten is available under 2 licenses, the MIT license and the University of Illinois/NCSA Open Source License.
Used for
Licence of the generated WebAssembly runtime.
  • Emscripten is available under two licences: the MIT License and the University of Illinois/NCSA Open Source License.

en-ueb-g2.ctb and en-ueb-g1.ctb (UEB translation tables)

liblouis project. Checked September 26, 2026.

What we take from it (3 statements)
Where in it
File headers; include chain walked by engine/build.sh
Recorded
Copyright (C) 2004-2008 ViewPlus Technologies, Inc. … Copyright (C) 2016 American Printing House for the Blind, Inc. … Copyright (C) 2019-2025 RNIB
Used for
The UEB rules the engine applies; copyright notices reproduced on /credits/.
  • Every translation on this site comes from liblouis 3.39.0 with its unmodified en-ueb-g1.ctb and en-ueb-g2.ctb tables. Engine
  • The headers of en-ueb-g1.ctb and en-ueb-g2.ctb describe them as literary tables for Unified English Braille, uncontracted and contracted. Engine
  • When its tables have no braille for a character, liblouis 3.39.0 does not drop it: it writes the character's code point as a run of escape cells, some of them eight-dot cells. Engine

GNU Lesser General Public License, version 2.1

Free Software Foundation. Checked September 26, 2026.

What we take from it (2 statements)
Where in it
Section 4; section 6(b) on shared-library mechanisms that load the library at run time
Recorded
If distribution of object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place satisfies the requirement to distribute the source code, even though third parties are not compelled to copy the source along with the object code.
Used for
The terms this site follows when it ships the liblouis engine and tables, and the reasoning on /credits/.
  • The LGPL 2.1 allows the library to be distributed in compiled form as long as its complete corresponding source code comes with it or can be copied from the same place.
  • Section 6 of the LGPL 2.1 lets a program that uses the library be distributed on its own terms when it uses a copy of the library at run time and would work with a modified, interface-compatible version of it.

liblouis README

liblouis project. Checked September 26, 2026.

What we take from it (2 statements)
Where in it
Introduction (from the v3.39.0 tarball)
Recorded
Liblouis has features to support screen-reading programs. This has led to its use in two open-source screenreaders, NVDA and Orca.
Used for
What liblouis is and where it is used; its licences (LGPLv2.1+ library, GPLv3+ command-line tools).
  • liblouis is the braille translator inside the open-source screen readers NVDA and Orca.
  • liblouis is free software licensed under the GNU Lesser General Public License, version 2.1 or later. Its command-line tools, which we do not use, are under the GNU GPL, version 3 or later.

liblouis v3.39.0 release

liblouis project. Checked September 26, 2026.

What we take from it (4 statements)
Where in it
Release assets
Recorded
v3.39.0 published 2026-09-01; liblouis-3.39.0.tar.gz SHA-256 629fa8cb0dfd9ad457c5bf47a42f0953b673e62c8ad6b1d03ddc4e2bd20008f1 (computed on download)
Used for
The engine version this site pins, and the source tarball it is built from.
  • Every translation on this site comes from liblouis 3.39.0 with its unmodified en-ueb-g1.ctb and en-ueb-g2.ctb tables. Engine
  • liblouis 3.39.0 treats every space as a word space, so a number printed with spaces between digit groups comes out as separate numbers. Engine
  • liblouis 3.39.0 reads a curly ’ at the start of a word as a closing single quotation mark (⠠⠴) and a straight ' in the same place as an apostrophe (⠄). Engine
  • When its tables have no braille for a character, liblouis 3.39.0 does not drop it: it writes the character's code point as a run of escape cells, some of them eight-dot cells. Engine

liblouis-js README

liblouis project. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
Licensing section
Recorded
Code that is not part of liblouis and not part of emscripten is licensed under GPL-3.0.
Used for
Why this site does not use or copy the official JavaScript wrapper.
  • In liblouis-js, the JavaScript package published by the liblouis project, the code that is not part of liblouis or Emscripten is licensed under GPL-3.0.

liblouis: changes from v3.39.0 to commit f86133d5be

liblouis project (GitHub). Checked September 27, 2026.

Cited on
What we take from it
Where in it
Four commits, three files changed: .gitignore, ANNOUNCEMENT, tables/en_US-comp8-ext.tbl. Between 2224057bd4 (the code the js-build file was compiled from) and v3.39.0 only NEWS, tables/ru-ru-g1.ctb and tests/braille-specs/ru.yaml changed
Recorded
Declare direction only once in en_US-comp8-ext.tbl
Used for
Why the js-build (liblouis master shortly after 3.39.0) can be compared with our 3.39.0 build: no C source or en-ueb table changed in between.

liblouis/js-build commit a694d1d947: "Automatic build of version commit-f86133"

liblouis project (GitHub). Checked September 27, 2026.

Cited on
What we take from it
Where in it
Commit of 3 September 2026; quote from README.md at that commit. build-no-tables-utf32.js at this commit was last changed in 40e10cc0a6 (1 September 2026, "Automatic build of version commit-222405")
Recorded
These are pre-built binaries of liblouis for Javascript environments. Binaries are created by cross-compiling the C implementation using emscripten.
Used for
The independent build our engine is cross-checked against on /accuracy/. Run as a test oracle only; never shipped.

text_nabcc.dis (North American Braille Computer Code display table)

liblouis project. Checked September 26, 2026.

Cited on
What we take from it (1 statement)
Where in it
Used by a test to verify this site's Braille ASCII table
Recorded
Display table mapping the 64 six-dot cells to North American Braille ASCII
Used for
Cross-check for the Braille ASCII and BRF conversions.
  • North American Braille ASCII assigns one printable ASCII character to each of the 64 six-dot cells, so a plain text file can hold braille.

UEB test specs for liblouis 3.39.0 (tests/braille-specs/en-ueb*.yaml)

liblouis project. Checked October 3, 2026.

Cited on
What we take from it (1 statement)
Where in it
Header of en-ueb.yaml; an xfail marker on each case the tables are known to get wrong
Recorded
Initially this was comprised of the examples published in "The Rules of Unified English Braille" (2013 edition), and the file follows the structure of the UEB rulebook.
Used for
The rulebook examples and word lists the conformance check runs, and the list of known differences on /accuracy/.
  • The liblouis project keeps test files for its UEB tables. Most of en-ueb.yaml is the worked examples of The Rules of Unified English Braille (2013 edition), and the project marks each example its tables are known to get wrong. Engine

Unicode, Braille ASCII, BRF and history 6 sources

1829 braille

Wikipedia. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
Section on the first publication; the article cites Braille's Procédé (1829) via the National Federation of the Blind
Recorded
The first four decades indicated the 40 letters of the alphabet (39 letters of the French alphabet, plus English w)
Used for
Why w sits outside the u–z pattern: it was added to the French letters at the end of the fourth line.
  • Louis Braille’s first published code, in 1829, used its first four lines for 39 letters of French plus the English w.

Braille Patterns, Range 2800–28FF (Unicode 18.0 code chart)

Unicode Consortium. Checked September 26, 2026.

Cited on
What we take from it (2 statements)
Where in it
Chart page 1
Recorded
Braille Patterns Range: 2800–28FF
Used for
Unicode braille code points; dot n sets bit n−1 above U+2800.
  • Unicode gives each of the 256 eight-dot braille patterns a character from U+2800 to U+28FF; the 64 six-dot cells are U+2800 to U+283F.
  • A braille character’s code point is U+2800 plus the values of its raised dots: dot 1 is 1, dot 2 is 2, dot 3 is 4, dot 4 is 8, dot 5 is 16, dot 6 is 32, dot 7 is 64 and dot 8 is 128.

BRF Files (Importing Formatted Braille (.brf) Files)

Duxbury Systems, DBT 12.6 documentation. Checked September 26, 2026.

Cited on
What we take from it (2 statements)
Where in it
Opening paragraph; page numbers and running headers are discussed under Importing to Make Changes in the BRF
Recorded
BRF files are relatively simple "ASCII braille" text files that represent finished braille pages, line by line and page by page, using the North American ASCII-braille convention to represent the braille cells.
Used for
What a BRF file is, and that files from transcription software carry formatting this site's export does not.
  • A BRF file is plain text in North American Braille ASCII that holds finished braille pages, line by line and page by page.
  • BRF files made by transcription software can carry running headers, centred headings and braille page numbers, laid out on each page.

Dolch word list

Wikipedia. Checked September 27, 2026.

Cited on
What we take from it (3 statements)
Where in it
Lead section (first published in a journal article in 1936, then in Problems in Reading, 1948; compiled from children’s books of his era); sections “Dolch list: Non-nouns” and “Dolch list: Nouns”. Its own lists hold 221 and 97 words: “left” in second grade, and goat, woman and women in place of goodbye.
Recorded
The list contains 220 "service words" that Dolch thought should be easily recognized in order to achieve reading fluency in the English language. The compilation excludes nouns, which comprise a separate 95-word list.
Used for
History and size of the Dolch list; the level names; the variation between published copies.
  • Edward William Dolch first published his list in 1936, in The Elementary School Journal. He made it from the words common to three published lists of the words children read and use, one of them counted from primers and first readers of the 1920s.
  • The Dolch list has 220 service words, split into five levels from pre-primer to third grade, and a separate list of 95 nouns: 315 words in all.
  • Published copies of the list differ slightly. Wikipedia’s copy adds left to the second-grade words and lists goat, woman and women among the nouns in place of goodbye.

Introduction to Louis Braille’s 1829 book, Procedure for Writing Words, Music, and Plainsong in Dots

National Federation of the Blind (NFB). Checked October 4, 2026.

What we take from it (1 statement)
Where in it
Introduction by Edward T. Morman, Director, Jacobus tenBroek Library, NFB Jernigan Institute; section “The Braille Code of 1829”. The first four series hold a–j, k–t, u v x y z with ç and four accented vowels, then nine more letters and w: 39 letters of French plus w. NFB’s own copy (nfb.org/1829-braille-book) refuses automated fetches; read from the copy Duxbury Systems keeps of the NFB edition.
Recorded
Braille did not include w in alphabetic order, because in French it appears only in loan words from other languages. He did, however, see the need to include the letter, so he added it at the end of series 4
Used for
Why w sits outside the u–z pattern: Louis Braille put it at the end of the fourth series of his 1829 code.
  • Louis Braille’s first published code, in 1829, used its first four lines for 39 letters of French plus the English w.

Perkins Brailler

Wikipedia. Checked September 27, 2026.

What we take from it (1 statement)
Where in it
Design; diagram caption: “the key under the left index finger corresponds to dot 1”
Recorded
The Perkins brailler has six keys corresponding to the dots of a braille cell, a space bar, a carriage return (enter) key, and a backspace key.
Used for
The Perkins key layout the on-screen keyboard follows.
  • A Perkins brailler has six keys, one for each dot of the cell, with a space bar between the two groups; the key under the left index finger is dot 1.

Accessibility, privacy and hosting 4 sources

Cloudflare Privacy Policy

Cloudflare, Inc. Checked September 26, 2026.

Cited on
What we take from it (1 statement)
Where in it
Section on End Users; policy effective as of November 4th, 2025
Recorded
The information processed may include but is not limited to IP addresses, traffic routing data, system configuration information, and other information about traffic to and from Customers’ websites, devices, applications, and/or networks.
Used for
What the host processes when it serves a page.
  • Cloudflare, which hosts our site, processes information about the traffic it serves, such as IP addresses and traffic routing data.

Content-Security-Policy: connect-src directive

MDN Web Docs. Checked September 26, 2026.

Cited on
What we take from it (1 statement)
Where in it
Opening paragraph and the list of controlled APIs (fetch(), XMLHttpRequest, WebSocket, EventSource, Navigator.sendBeacon())
Recorded
The HTTP Content-Security-Policy (CSP) connect-src directive restricts the URLs which can be loaded using script interfaces.
Used for
How the privacy promise is enforced by the browser.
  • A Content-Security-Policy connect-src directive limits where a page's scripts can send requests, including with fetch(), XMLHttpRequest, WebSocket, EventSource and sendBeacon().

Web Content Accessibility Guidelines (WCAG) 2.2

W3C. Checked September 26, 2026.

Background only: no page cites it directly.

What we take from it
Where in it
W3C Recommendation, 12 December 2024; SC 2.5.8
Recorded
the target size for each user interface component and graphical object must be at least 24 by 24 CSS pixels
Used for
The accessibility standard this site is built and tested against.

X-Frame-Options header

MDN Web Docs. Checked October 4, 2026.

Cited on
What we take from it (1 statement)
Where in it
Directives: SAMEORIGIN
Recorded
The document can only be embedded if all ancestor frames have the same origin as the page itself.
Used for
What the X-Frame-Options: SAMEORIGIN header on every page does, as described on /terms/.
  • With the header X-Frame-Options: SAMEORIGIN, a browser shows a page inside a frame only when the frame belongs to the same site as the page.

Fonts and content licences 4 sources

Atkinson Hyperlegible Mono: licence file in the Google Fonts repository

Google Fonts. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
OFL.txt, first lines; METADATA.pb in the same folder gives license "OFL" and the designers
Recorded
Copyright 2020-2024 The Atkinson Hyperlegible Mono Project Authors (https://github.com/googlefonts/atkinson-hyperlegible-next-mono). This Font Software is licensed under the SIL Open Font License, Version 1.1.
Used for
The licence of the monospaced typeface used for dot numbers, Braille ASCII and hashes.
  • Atkinson Hyperlegible Next and Atkinson Hyperlegible Mono are licensed under the SIL Open Font License, version 1.1.

Atkinson Hyperlegible Next: licence file in the Google Fonts repository

Google Fonts. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
OFL.txt, first lines; METADATA.pb in the same folder gives license "OFL" and the designers
Recorded
Copyright 2020-2024 The Atkinson Hyperlegible Next Project Authors (https://github.com/googlefonts/atkinson-hyperlegible-next). This Font Software is licensed under the SIL Open Font License, Version 1.1.
Used for
The licence of the text typeface used on every page.
  • Atkinson Hyperlegible Next and Atkinson Hyperlegible Mono are licensed under the SIL Open Font License, version 1.1.

Attribution 4.0 International (CC BY 4.0)

Creative Commons. Checked September 26, 2026.

What we take from it (1 statement)
Where in it
Licence deed
Recorded
Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
Used for
The licence of this site's braille cell drawings.
  • CC BY 4.0 lets anyone copy, share and adapt the material for any purpose, including commercial use, as long as they give credit.

Bricolage Grotesque: licence file in the Google Fonts repository

Google Fonts. Checked October 3, 2026.

What we take from it (1 statement)
Where in it
OFL.txt, first lines; METADATA.pb in the same folder gives license "OFL" and the designer, Mathieu Triay
Recorded
Copyright 2022 The Bricolage Grotesque Project Authors (https://github.com/ateliertriay/bricolage). This Font Software is licensed under the SIL Open Font License, Version 1.1.
Used for
The licence of the heading typeface used on every page.
  • Bricolage Grotesque is licensed under the SIL Open Font License, version 1.1.

Other references 18 sources

A Basic Sight Vocabulary (E. W. Dolch)

The Elementary School Journal (Dolch, 1936). Checked October 4, 2026.

Cited on
What we take from it (2 statements)
Where in it
Vol. 36, no. 6 (February 1936), pp. 456–460: method pp. 456–457 (the Wheeler-Howell list is “the 453 words most frequently found in ten primers and ten first readers published between 1922 and 1929”); list heading p. 458; “95 NOUNS COMMON TO THE THREE WORD LISTS BUT NOT RECOMMENDED FOR A BASIC SIGHT VOCABULARY”, p. 460. Read from a JSTOR copy of the article.
Recorded
A BASIC SIGHT VOCABULARY OF 220 WORDS, COMPRISING ALL WORDS, EXCEPT NOUNS, COMMON TO THE WORD LIST OF INTERNATIONAL KINDERGARTEN UNION, THE GATES LIST, AND THE WHEELER-HOWELL LIST
Used for
Where the Dolch list comes from, when it was first published, and its 220 service words and 95 nouns.
  • Edward William Dolch first published his list in 1936, in The Elementary School Journal. He made it from the words common to three published lists of the words children read and use, one of them counted from primers and first readers of the 1920s.
  • The Dolch list has 220 service words, split into five levels from pre-primer to third grade, and a separate list of 95 nouns: 315 words in all.

Basic Braille by Sight: Reading Series

Hadley. Checked September 27, 2026.

Background only: no page cites it directly.

What we take from it
Where in it
Page introduction; workshops from “Letters a - j” to “More Punctuation”
Recorded
Learn to read braille by seeing, hearing and doing. […] Uncontracted, UEB braille.
Used for
Linked from /how-to-read-braille/ as lessons for learning uncontracted UEB by sight.

Braille

Paths to Literacy. Checked September 27, 2026.

What we take from it (1 statement)
Where in it
Learning Center › Braille › Instructional Strategies
Recorded
Braille instruction builds on a foundation of basic concepts, spatial awareness, tactile discrimination and real-life experiences. Braille programs should include instruction in both reading and writing.
Used for
What braille teaching builds on; linked from /how-to-read-braille/ for teachers and families.
  • Teaching braille builds on basic concepts, spatial awareness and the ability to tell shapes apart by touch, and it covers writing braille as well as reading it.

Braille Brain

American Printing House (APH). Checked September 27, 2026.

Background only: no page cites it directly.

What we take from it
Where in it
Product summary; Product Description: “Braille Brain promotes braille literacy for pre-service and in-service Teachers of Students with Visual Impairments (TSVIs), paraprofessionals, parents, and educational team members.”
Recorded
A FREE, self-paced online braille tutorial that provides self-graded practice and assessments using 6-key entry in the foundations of UEB.
Used for
Linked from /how-to-read-braille/ as a free UEB tutorial for teachers and parents.

Braille for Everyday Use: Letters Series

Hadley. Checked September 27, 2026.

What we take from it (1 statement)
Where in it
Page introduction; workshops Letters A-C to Letters X-Z
Recorded
Teach your fingers to read through this series of interactive workshops. […] There are two parts to every workshop in this series: a workbook mailed to your home, and audio instruction delivered either on the phone (847-316-0326) or online.
Used for
An example of learning to read braille by touch: embossed workbook plus audio instruction.
  • Braille readers read by moving their fingertips along lines of embossed dots. Sighted people can learn braille too, either by touch or by sight.

Braille Mechanics Guidance

Paths to Literacy. Checked October 4, 2026.

What we take from it (1 statement)
Where in it
Reading Braille, “Optimum hand position for reading braille” (Gwyn McCormack); also “Use of both hands together” and “the index fingers or the index and middle fingers on one or both hands are usually the primary reading fingers”
Recorded
Fingers should be curved naturally to drop them onto the line of braille and slide quickly and easily from left to right
Used for
How braille is read by touch: left to right, with the pads of the fingers, both hands on the line.
  • A braille reader slides the pads of the fingers along each line from left to right. Teachers recommend both hands on the line, with the index fingers usually doing most of the reading.

Dolch Sight Words List

SightWords.com. Checked September 27, 2026.

Cited on
What we take from it (2 statements)
Where in it
Dolch Word Lists: Pre-K (40 words), Kindergarten (52), First Grade (41), Second Grade (46), Third Grade (41), Nouns (95)
Recorded
The list contains 220 “service words” plus 95 high-frequency nouns. […] There are a total of 315 Dolch Sight Words.
Used for
The 315 words on /braille-words/ (src/data/inventory/dolch.ts).
  • The Dolch list has 220 service words, split into five levels from pre-primer to third grade, and a separate list of 95 nouns: 315 words in all.
  • Published copies of the list differ slightly. Wikipedia’s copy adds left to the second-grade words and lists goat, woman and women among the nouns in place of goodbye.

Dolch Word List by Grade (alphabetical)

dolchword.net. Checked September 27, 2026.

Cited on
What we take from it (1 statement)
Where in it
Table with columns Pre-Primer, Primer, First Grade, Second Grade, Third Grade; home page: “In addition to the 220 “service words”, Dolch also put together a list of 95 common nouns”
Recorded
This page has a list of all 220 Dolch words divided into grade lists. Within each grade the words are ordered alphabetically.
Used for
Cross-check of the 220 service words (identical to SightWords.com) and the level names used on /braille-words/.
  • The Dolch list has 220 service words, split into five levels from pre-primer to third grade, and a separate list of 95 nouns: 315 words in all.

Google Analytics cookie usage on websites

Google Analytics Help. Checked October 4, 2026.

Cited on
What we take from it (1 statement)
Where in it
Cookies set by the Google Analytics JavaScript (gtag.js)
Recorded
_ga … Used to distinguish users. … 2 years. _ga_<container-id> … Used to persist session state. … 2 years
Used for
Which cookies Google Analytics sets and for how long, on /privacy/ when Analytics is on.
  • Google Analytics sets two cookies: _ga, which tells one visitor from another, and _ga_ followed by our property's ID, which keeps track of your visit. Each lasts up to two years.

How the braille alphabet works

Perkins School for the Blind. Checked September 27, 2026.

What we take from it (1 statement)
Where in it
Opening paragraphs, before “Get started learning braille”. The page refuses automated fetches (HTTP 403); read in a browser.
Recorded
Blind kids and adults read braille by gliding their fingertips over the lines of embossed braille dots and write braille using a variety of tools including the Perkins Brailler. People who are sighted can learn braille as well, either by touch or using their vision.
Used for
How braille is read by touch, and that sighted people can learn it by touch or by sight; linked from /how-to-read-braille/ as a beginner’s guide.
  • Braille readers read by moving their fingertips along lines of embossed dots. Sighted people can learn braille too, either by touch or by sight.

IP masking in Google Analytics

Google Analytics Help. Checked October 4, 2026.

Cited on
What we take from it (1 statement)
Where in it
Opening paragraph
Recorded
In Google Analytics 4, IP masking is not necessary since IP addresses are not logged or stored.
Used for
What /privacy/ says Google Analytics does with IP addresses.
  • Google says Google Analytics 4 does not log or store IP addresses.

Perkins Brailler Manual

Perkins School for the Blind. Checked October 4, 2026.

What we take from it (1 statement)
Where in it
Machine Layout and Basic Functions, “Keys”, p. 5; continues: “If you move to the right of the spacebar, you will find the keys for dots 4, 5, and 6, then the backspace key at the far right.” Linked as the English manual from brailler.perkins.org/pages/product-manuals-faq
Recorded
There are nine keys across the front of the Perkins Brailler. The spacebar is in the middle. If you move to the left of the spacebar, you will find the keys for dots 1, 2, and 3, then the line spacing key at the far left.
Used for
The Perkins key layout the on-screen keyboard follows: dots 3, 2, 1, the space bar, then dots 4, 5, 6.
  • A Perkins brailler has six keys, one for each dot of the cell, with a space bar between the two groups; the key under the left index finger is dot 1.

Required content (AdSense Program policies: Privacy and security)

Google AdSense Help. Checked October 4, 2026.

Cited on
What we take from it (1 statement)
Where in it
"My privacy policy" list: the three statements a publisher's privacy policy should include, ending "Users may opt out of personalized advertising by visiting Ads Settings"
Recorded
Third party vendors, including Google, use cookies to serve ads based on a user's prior visits to your website or other websites.
Used for
What /privacy/ says Google and its partners would do with cookies if AdSense ads are added, and where visitors can opt out.
  • Google's AdSense help says a site that shows its ads should tell visitors that third-party vendors, including Google, use cookies to serve ads based on a visitor's earlier visits to that site or other sites, and that visitors can opt out of personalised advertising in Google's Ads Settings.

Six Key Input (Braille Brain)

American Printing House for the Blind (APH). Checked September 27, 2026.

What we take from it (2 statements)
Where in it
Six Key Input; also: “you must ensure your keyboard is capable of sending multiple keys at once (not all keyboards are.)”
Recorded
The designated keys are s, d, and f for dots 3, 2, and 1 respectively and j, k, and l for dots 4, 5, and 6.
Used for
The standard computer-keyboard mapping for six-key braille entry, and the keyboard limitation.
  • On a computer keyboard, six-key braille uses S, D and F for dots 3, 2 and 1 and J, K and L for dots 4, 5 and 6, pressed together for one cell.
  • Not every computer keyboard can send several keys pressed at the same moment, so some keyboards cannot type six-key braille.

Welcome to the Braille Bug

American Printing House (APH). Checked September 27, 2026.

Background only: no page cites it directly.

What we take from it
Where in it
Home page, “Discover Braille”
Recorded
BrailleBug helps students, educators, and curious learners explore how braille works and why it matters.
Used for
Linked from /how-to-read-braille/ as an introduction to braille for students.

Our build works out the “Cited on” lists from the statements and source lists in each page's own files. 4 of the 45 sources are background only and no page cites them directly.