the key. In the Belgian AZERTY layout, ñ can be generated by a combination of . Alt key With some operating systems, the Alt key generates characters by means of their individual codes. In order to obtain characters, the Alt key must be pressed and held down while typing the relevant code into the numeric keypad. On Linux, the alt key gives direct access to French language special characters. The ligatures œ and æ can be keyed in by using either or respectively, in the fr-oss keyboard layout; their upper case equivalents can be generated using the same key combinations plus the Shift key. Other useful punctuation symbols, such as ≤, ≥, or ≠ can be more easily accessed in the same way. Guillemets « and » Also called angle quotes, French quotation marks, double chevrons are polylines pointed like arrows (« or »), sometimes forming a complementary set of punctuation marks used as a form of quotation mark. With a US International Keyboard and corresponding layout, and can also be used. The characters are standard on French Canadian keyboards and some others. Macintosh users can type « as and » as . (This applies to all English-language keyboard layouts supplied with the operating system, e.g. "Australian", "British", "Canadian", "Irish", "Irish Extended", "U.S." and "U.S. Extended". Other language layouts may differ.) In French-language keyboard layouts and can be used. On Nordic keyboards, can be used for «, and can be used for ». For users of Unix-like operating systems running the X Window System, creation of the guillemet depends on a number of factors including the keyboard layout that is in effect. For example, with the US International Keyboard layout selected, a user would type for « and for ». On some configurations they can be generated by typing « as and » as . With the compose key, press and . Additionally with the ibus input method framework enabled, users may enter these characters into those applications that accept it by using followed by their Unicode code points: either or , respectively. In Microsoft Office applications, typing the US quotation mark (on the key) will produce either a left Guillemet « or right Guillemet » based on the spacing. In France AZERTY under Linux In X11, the window system common to many flavors of UNIX, the keyboard interface is completely configurable allowing each user to assign different functions to