each key in line with their personal preferences. For example, specific combinations of key could be assigned to many other characters. Layout of the French keyboard under Microsoft Windows Missing elements Ever since the AZERTY keyboard was devised, a single key has been dedicated to the letter ù, which occurs in only one word (où [where]); the œ is completely unrepresented, despite the fact that it is an integral part of the French spelling system and occurs in several common words like œil (eye) and œuvre (work). æ, as in Lætitia [girl's name] or ex æquo [dead-heat] is also not represented. The non-breaking space, which prevents having punctuation characters in isolation at the ends or beginnings of lines, has no keyboard equivalent. The capital letters, É, Ç, and Œ (as in the word Œdipe [Oedipus], for example), are available neither on the typewriter itself, nor using the operating system mentioned earlier. It is possible to fill in these gaps by installing a keyboard driver that has been specially enriched for the French language. One can also use WinCompose in order to easily write all characters, the character Ç could be written by pressing or the character « with , and there is also an option to allow to write accentuated capitals with such that Ç is writable with . Some word-processing software packages sometimes address some of these gaps. The non-breaking space can be obtained by pressing followed by a space, in a word-processing package such as OpenOffice.org Writer, or by using [Spacebar] in Microsoft Word. Apart from these gaps, the French AZERTY layout has some strange features which are still present in the Microsoft Windows Vista operating system: The combination does not generate any character at all. The presence of two "^" keys, one of which is a dead key and is located at the right of the , while the other – on the key — is not. When a ¦ is required, a | is generated. (However, this is a common situation for many keyboards, not just AZERTY. The main issue for keyboard makers is that a solid vertical | keycap legend could be confused with a Capital letter I and so a broken vertical ¦ keycap helps clarify that it is not a letter but a symbol. In practice, most typists actually need the solid vertical rather than a broken vertical, so using a broken vertical