The US International Layout, and Its Five Dead Keys
The US International layout takes five punctuation characters, the apostrophe, the double quote, the grave accent, the tilde and the circumflex, and turns each of them into a dead key. They occupy three physical keys, since the apostrophe and quote share one, the grave and tilde share another, and the circumflex sits on Shift plus 6. Every other key stays exactly where the plain United States layout puts it.
What a dead key does here
A dead key prints nothing when you press it. It waits for the next keystroke and combines with it if the combination exists. The pairs are consistent across the layout.
- Apostrophe then e gives é, and apostrophe then a gives á.
- Double quote then u gives ü, and double quote then o gives ö.
- Grave then a gives à, and grave then e gives è.
- Tilde then n gives ñ, and tilde then a gives ã.
- Circumflex then o gives ô, and circumflex then i gives î.
The same key stays a dead key whether or not you want an accent, which is the whole source of the layout's reputation. The space bar is the escape hatch: press the dead key, then press space, and you get the plain punctuation mark with no space added afterwards.
The apostrophe in don't, and what actually goes wrong
The famous complaint is less absolute than it sounds. When a combination does not exist, Windows prints both characters, so typing d o n apostrophe t produces don't with no intervention needed, because there is no accented t in the set.
The trouble starts when a vowel follows. Typing y apostrophe a l l straight through gives yáll rather than y'all. Opening a quotation in front of a vowel does the same thing: double quote followed by A gives Ä instead of an opening quote and a capital A. In both cases the fix is the space bar, pressed after the punctuation mark and before the letter.
Two habits remove almost all of the friction. Learn the space escape well enough that it stops being a conscious decision, and remember that the accent always comes before the letter, never after it. The general behaviour, including how dead keys look on a machine you do not know, is covered in dead keys explained.
The AltGr route, which is often the better one
Beyond dead keys, the layout puts a second set of characters on the right Alt key, marked AltGr. These arrive in a single motion with no waiting state at all, which makes them the calmer option for characters you type often. Our keyboard test draws the layout with these positions marked: AltGr plus a, e, i, o or u for the acute vowels á é í ó ú, AltGr plus n for ñ, AltGr plus s for ß, AltGr plus c for the copyright sign, and AltGr plus 5 for the euro sign.
For a Spanish name, a German surname or a euro amount inside otherwise English text, AltGr is one press and one modifier. The dead key route only pays off when you need combinations the AltGr level does not carry.
When this layout beats plain US, and when it loses
It wins when accents are occasional. A single layout that covers English plus the accented letters of Spanish, French, German, Portuguese and Dutch is simpler to live with than two layouts and a switch between them, and it needs no change of hardware, since the physical board stays the same ANSI or ISO board you already own.
It loses in code and in the command line. Backticks fence code in Markdown, tildes stand for home directories, and quotes appear several times per line, so the escape becomes a tax paid hundreds of times a day. Windows does not ship a version of the layout with the dead keys switched off, so the realistic alternatives are the plain United States layout with a second layout for accents, or a custom layout file.
It also loses if you share the machine. Someone who does not know the escape will read the behaviour as a fault, and the first symptom they report is a keyboard that swallows the apostrophe. Adding, removing and confirming a layout takes about a minute and is described in changing the keyboard layout in Windows.
Confirming that it works
Test the punctuation, not the letters. Type an apostrophe followed by a space, a double quote followed by a space, then an accented vowel by both routes, and finally a contraction such as it's inside a normal sentence. If all four come out as intended, the layout is behaving.
Wordsworth gives you a real trap to practise on. I wandered lonely as a Cloud, which he printed in 1807, contains the word o'er, an apostrophe followed directly by the letter e, which on this layout comes out as oér unless you use the space escape. Its 412 characters are two quiet stanzas about daffodils beside a lake, and they will tell you within seconds whether the escape has become a habit yet. George Gordon Byron sets the same trap twice in She walks in beauty, written for Hebrew Melodies in 1815, where 441 characters hold both o'er and mellow'd. And John Keats closed To Autumn, printed in 1820, with o'er-brimm'd, so its 494 characters ask for the apostrophe and the hyphen in the same reach. All three are waiting in the typing test, each with its author, year and source on its own page.